The top cybersecurity companies in the United Kingdom offer a complete range of cybersecurity services and solutions to meet all the requirements of businesses. However, identifying a perfect cybersecurity expert is very time-consuming, as it requires looking for the best companies and comparing their information. We have curated this list of cybersecurity services in the UK for you.
Here are the Top Cybersecurity Service Providers & Firms in the UK
Isoline Communications is a London-based B2B technology content marketing agency founded in 2015. The company specializes in helping technology, telecoms, infrastructure, and other complex B2B businesses turn technical subject matter into clear, engaging marketing content and campaigns. Its work spans content strategy, research, thought leadership, demand generation, brand awareness, social media, sales enablement, SEO, website content, and digital experiences.Isoline works across technology sectors including telecommunications, IoT, cybersecurity, SaaS, blockchain, medtech, broadcast, and fintech. The agency combines technical research with creative storytelling to communicate complex products and services to decision-makers, technical audiences, customers, and other stakeholders.Its capabilities include long- and short-form content, whitepapers, blogs, case studies, infographics, video and podcast scripts, websites, SEO, UX, interactive content, social campaigns, pitch decks, playbooks, account-based marketing materials, and other sales-enablement assets. The company also operates a Creative Studio and Innovation Lab, where it develops visual, interactive, data-driven, and emerging-format content experiences. ... Read more
Services
- IT Services
- Video Production
- Content Marketing
- Blockchain Marketing Agencies
Focus in
- Cyber Security
$100 - $149
10 - 49
2015
- London, United Kingdom
Cyphere partners with mid-market technology leaders and executives to strengthen their security posture through strategic risk assessment and advisory services. We empower CTOs, CIOs, and IT Directors to make well-informed security decisions by delivering actionable insights across people, processes, and technology - ensuring optimal balance between robust security and business usability. Cyphere is a CREST accredited security services provider helping organisations secure their most prized assets. We are not a 'report and run' consultancy. We are an IASME certification body for Cyber Essentials Plus and Cyber Assurance certifications. Cyphere provides technical security assessments and managed security services. To understand, analyse and help solve customer business problems, we work on both sides of the fence (offensive/defensive security). We are serving across these security domains: Cyber Security Maturity and Strategy Advice Penetration Testing - Cloud, Web, Mobile, Networks & Devices Security Audits, ISO 27001 Consultancy and GRC Managed Security Services Compliance & Certifications - GDPR, ISO27001, PCI DSS, Cyber Essentials IASME Certifications - Cyber Essentials, Cyber Essentials Plus certification body Threat Intelligence Data privacy Service quality underpins everything we do. We base it around three core pillars: We Engage to gain customer insights We Listen to tailor your requirements We Deliver without surprises Our partnership will enable you to: assess your cyber risks improve operational BAU security continuously identify and remediate risks connect IT security compliance with your business address your cyber risks keep you updated with threat intelligence Our security expertise, sector-specific experience & non-salesy approach helps organisations to manage cyber security threats effectively. Book a free call to discuss your concerns. ... Read more
Services
- Testing Services
- IT Services
- Cloud Computing Services
- Artificial Intelligence
Focus in
- Cyber Security
$50 - $99
2 - 9
2021
- Altrincham, United Kingdom
Professional recovery service for disabled, hacked or suspended Instagram and Facebook accounts and Facebook Ads accounts. Case-by-case review, transparent process, no-recovery-no-fee approach.
Services
- IT Services
Focus in
- Cyber Security
NA
2 - 9
2025
- London, United Kingdom
Threat Protect is a vendor-agnostic cybersecurity partner for UK organisations, especially those in regulated sectors such as financial services and wealth management, legal, energy, pharma, healthcare and manufacturing.We bring four things together: independent advisory (including vCISO and cyber assurance assessments), the right technology chosen by problem rather than by vendor, managed security (managed detection and response, managed SOC and managed SIEM, delivered through specialist providers we select and manage), and continuous compliance that keeps clients audit-ready year-round for ISO 27001, SOC 2, PCI DSS, DORA, NIS2, UK GDPR and Cyber Essentials. Certification is delivered through UKAS-accredited certification bodies.Clients deal with one partner, accountable for the outcome. We work with organisations across London and the UK. Threat Protect Limited was founded in 2018 (company number 11157802). ... Read more
Services
- IT Services
Focus in
- Cyber Security
NA
2 - 9
2018
- Chatham, United Kingdom
EJN Labs is a London-based, CREST-certified penetration testing and cyber security company. From its Canary Wharf base, the team supports UK organisations with web application, API, mobile, cloud, infrastructure, AI and red-team testing. EJN Labs focuses on clearly scoped engagements, fixed pricing, UK-based security consultants, live communication of critical findings, audit-ready reporting and free retesting of remediated issues. The company also supports Cyber Essentials certification through its IASME relationship. Typical clients engage EJN Labs before compliance assessments, procurement submissions, product launches and material technology changes. ... Read more
Services
- IT Services
Focus in
- Cyber Security
NA
2 - 9
2022
- London, United Kingdom
TECHNOLOGY CONSULTINGModernise. Secure. Transform.We bring senior technology experience gained in large organisations to small and medium-sized businesses, helping you reduce risk, modernise your systems and get more value from your technology. Based in Bury St Edmunds, Maxima Opus provides technology leadership, cloud and cyber security expertise to businesses across the United Kingdom.✦ ✦ â¦EXPERIENCE & ACCREDITATIONSOur team draws on extensive experience from working with startups and growing businesses, through to leading brands such as Aviva, Willis Towers Watson, Vitality Health, Trainline, PwC, Tate & Lyle, and easyJet.We are an AWS Partner and Microsoft AI Cloud Partner, with CREST Pathway Accreditation and Cyber Essentials certification.⦠⦠â¦LET US HELPIf you need help with technology strategy, building secure products and platforms, or making sure your technology supports growth and compliance, please contact [email protected] | www.maximaopus.co.ukRegistered in England and Wales No. 16871266.Registered Office: Maxima Opus Ltd, Unit 20 Park Farm Business Centre, Fornham Park, Bury St. Edmunds, IP28 6TS. ... Read more
Services
- IT Services
- Cloud Computing Services
Focus in
- Cyber Security
$100 - $149
2 - 9
2025
- Bury St Edmunds, United Kingdom
Blue Frontier started back in 2005 in Salisbury, Wiltshire and now has offices in Bristol and Southampton.We offer a full range of technical, web, software and digital marketing services for businesses in the Public and Private Sector and we work extensively with Councils and the NHS. Our website designers create user-friendly, responsive and engaging websites, while our development team develop websites, eCommerce, web portals and mobile apps. We have an expert digital marketing team who specialise in SEO, PPC, Social Media and copywriting and a team of IT engineers who handle hosting and maintenance for our clients. ... Read more
Services
- Mobile App Development
- Web Development
- Software Development
- Web Design
- E-commerce Development
Focus in
- IT Consulting
- IT & Networking
- Cyber Security
- Database Administration
NA
50 - 249
2005
- Salisbury, United Kingdom
Kaleida develop high-quality, bespoke software that streamlines business operations. We work closely with our clients to produce business-focused software solutions, including desktop and web applications, that deliver real investment value. Based in Manchester in the North West of England and operating nationwide, we offer comprehensive technology services - from strategic consultancy through development, integration and infrastructure hosting and IT support. ... Read more
Services
- Web Development
- Software Development
- IT Services
- Cloud Computing Services
- Other Services
Focus in
- IT Consulting
- Cyber Security
- IT & Networking
$50 - $99
10 - 49
1997
- Manchester, United Kingdom
Tech ICS are Digital and IT Specialists working in the commercial field since 2018. We currently have our offices based in the UK and Bangladesh. Our developers are very well versed on providing the assistance required to your business.
Services
- Web Development
- Software Development
- Web Design
- E-commerce Development
- Testing Services
Focus in
- Outsourcing
- Network & System Administration
- IT Consulting
- Cyber Security
< $25
2 - 9
2018
- London, United Kingdom
Anuitex offers custom software application development services for achieving your business goals. Our services ensure that your website is modern, stable and sends the intended message to your audience. Our team likes to undertake sophisticated tasks that allow our clients to prosper. We have gathered more than 200 professionals, that uphold our comprehensive, transparent and consistent development process. They had put more than 11,600 hours of doing their best in software development. Anuitex developers strive to deliver quality website development services to create all-round solutions. Today we have project experience in such areas: -Finance; -Healthcare; -Hotel and Restaurant; -Education; -Real Estate; -Travel. Let's transform your challenges into prosperity! ... Read more
Services
- Mobile App Development
- Web Development
- Software Development
- Web Design
- IT Services
Focus in
- Cyber Security
- IT & Networking
- Database Administration
- Network & System Administration
- IT Consulting
$25 - $49
50 - 249
2012
- London, United Kingdom
Team in India is the best web development company in the UK (CMMI level 3 appraised) with 10K+ clients over the last 21 years. We provide professional web design, development, and marketing services with 100% client satisfaction.
Services
- Mobile App Development
- Web Development
- Software Development
- E-commerce Development
- IT Services
Focus in
- Cyber Security
- IT Consulting
- IT & Networking
- Database Administration
- Staff Augmentation
NA
250 - 999
20
- London, United Kingdom
We’re chilled and a laidback agency who serves as the bridge that connects clients with customers to encourage positive actions & change lives through innovative ideas.
Services
- Web Development
- E-commerce Development
- Maintenance & Support
- IT Services
- SEO
Focus in
- IT Consulting
- Cyber Security
- IT & Networking
- Outsourcing
$100 - $149
10 - 49
2022
- London, United Kingdom
ScienceSoft USA Corporation
USA-based AI Transformation and Software Development Company
ScienceSoft is a USA-based IT consulting, software development and testing company. Their experience of 14 years in iOS app development helps them build successful apps with UX and UI design, implementation, QA, and integration of applications for iPhones and iPads. They can overcome major challenges in iOS app development such as cross-device compatibility, performance and memory limitations, battery consumption, network speed, etc. They are also specialists in JavaScript development. ... Read more
Services
- Mobile App Development
- Software Development
- E-commerce Development
- Testing Services
- IT Services
Focus in
- Cyber Security
- IT Consulting
- IT & Networking
- Network & System Administration
- Outsourcing
$50 - $99
250 - 999
1989
- Abbeywood, United Kingdom
WebhostUK.Co.UK is one of the best Web hosting provider in the UK since 2003. We specialize in cloud Hosting and Managed dedicated servers. WebhostUK LTD offers fully managed wordpress hosting, Joomla Hosting, Ecommerce hosting, Domain registration and SSL service, with true 24x7 support available to assist you.
Services
- Maintenance & Support
- IT Services
- Cloud Computing Services
- Other Services
Focus in
- IT & Networking
- Network & System Administration
- Cyber Security
- Database Administration
- Outsourcing
< $25
10 - 49
2003
- London, United Kingdom
Smart Web Agency, situated in the South East, is a leading software development agency and responsive web design company. We specialize in creating online web applications tailored for Internet marketing agencies, local brands, and SMEs. Our journey commenced with a primary focus on web application development, and as we achieved success, we diversified into crafting integrated system software, empowering SMEs and start-ups to attain growth. Our team's resilience stems from our dedication to continuous learning, experimentation, refinement, and expertise in providing innovative solutions. ... Read more
Services
- Mobile App Development
- Web Development
- Software Development
- Web Design
- E-commerce Development
Focus in
- Cyber Security
- IT & Networking
- Database Administration
- Outsourcing
- IT Consulting
$50 - $99
10 - 49
2010
- Ashford, United Kingdom
Red C is an award-winning app development agency based in the heart of ‘Tech City’ - Shoreditch, London. The Red C team consists of dynamic individuals with a diverse wealth of experience, who share a passion for all things mobile. We are a company with integrity and deliver what we promise - we have a genuine interest in your project from conception to completion.
Services
- Mobile App Development
- Web Development
- Web Design
- Maintenance & Support
- IT Services
Focus in
- Network & System Administration
- Database Administration
- IT & Networking
- Staff Augmentation
- Cyber Security
< $25
10 - 49
2000
- London, United Kingdom
Sprint Integration is a managed IT support provider based in Leigh-on-Sea, Essex, serving small and mid-sized businesses across London, Essex, and the South East. Founded 25+ years ago (they were even Avocet Aviation's first-ever client), they now support 200+ UK businesses with a 90% retention rate and 5-star reviews.Services: IT support, cyber security & endpoint protection, cloud solutions (Azure), Cyber Essentials accreditation, backup & disaster recovery, infrastructure/recycling, and connectivity (broadband, VoIP, leased lines). Managing Director is Jon Barns. They currently promote a free £950 IT Health Check as their main lead magnet. ... Read more
Services
- IT Services
Focus in
- Cyber Security
- Managed IT
< $25
50 - 249
2000
- Essex, United Kingdom
At Gorilla360 Ltd, we offer a full suite of services tailored to meet your business needs, leveraging the latest in technology and innovation. Whether you're looking for IT support, software development, digital marketing, or staffing solutions, we've got you covered. Our team of experts is dedicated to providing top-notch services to help your business thrive in today's competitive landscape. Explore Our Services: IT Onsite Support: Our IT onsite support services ensure that your systems run smoothly, allowing you to focus on your core business activities. From troubleshooting technical issues to proactive maintenance, our team is here to keep your IT infrastructure operating at peak performance. IT Development (Website, APP & Software): Stay ahead of the curve with our custom IT development solutions. Whether you need a new website, mobile app, or bespoke software, our experienced developers will work closely with you to bring your vision to life. Staff Augmentation: Scale your team effortlessly with our staff augmentation services. Whether you need additional resources for a short-term project or ongoing support, we provide skilled professionals to seamlessly integrate into your workforce. Digital Marketing: Elevate your online presence and reach your target audience with our digital marketing services. From SEO and PPC to social media management, our strategies are designed to drive results and maximize your ROI. Virtual Assistant: Streamline your operations and increase productivity with our virtual assistant services. From administrative tasks to customer support, our virtual assistants are available to handle a wide range of responsibilities, allowing you to focus on growing your business. Data Analysis & Infrastructure: Unlock the power of your data with our data analysis and infrastructure services. Our experts will help you make sense of your data, identify trends, and make informed business decisions to drive growth and success. ... Read more
Services
- Mobile App Development
- Web Development
- Software Development
- Web Design
- E-commerce Development
Focus in
- Managed IT
- MySQL
- Staff Augmentation
- IT Consulting
- Outsourcing
< $25
10 - 49
2020
- London, United Kingdom
As a leading international Digital Marketing Agency, Makolab delivers solutions for both business and domestic purposes and can fulfil client goals in any area of the digital world. With over 25 years in the industry, our portfolio is not only diverse but highlights our exceptional capacity to fulfil clients' goals.
Services
- Mobile App Development
- Web Development
- Software Development
- Web Design
- E-commerce Development
Focus in
- Cyber Security
- Staff Augmentation
- IT & Networking
- Database Administration
- Outsourcing
< $25
50 - 249
1989
- London, United Kingdom
MLabs builds and reviews software where the cost of being wrong is high. The work splits four ways: advice for founders and engineering leaders, development in Haskell, Rust and Nix, and independent review and formal verification before a system goes live. The fourth is running the identity and secrets infrastructure a team deploys and then has nobody to maintain â Keycloak, OpenBao, and certificate lifecycle.On Cardano, MLabs writes and audits smart contracts in Aiken, Plutarch and Plinth, and maintains open-source tooling the ecosystem depends on. Audit reports are published where the client allows it.The first conversation is free. Bring the problem rather than a specification. ... Read more
Services
- Software Development
- IT Services
- Blockchain Development
Focus in
- Cyber Security
- Managed IT
$100 - $149
10 - 49
2018
- London, United Kingdom
Astec IT Consultancy LTD
Helping frustrated business owners with unreliable IT services.
Welcome to Astec IT, a premier MSP for London and UK SME businesses who have between 10 â 100 employees. At the heart of our mission is a commitment to transforming and elevating the digital experience for small and medium-sized enterprises.Â
Services
- IT Services
Focus in
- Managed IT
- Cyber Security
NA
10 - 49
2018
- London, United Kingdom
IT Outcomes - IT Support Kent
Stress-Free Business IT Support Built Around You
IT Outcomes delivers smart, stress-free IT solutions for businesses across London, Kent, and the Southeast. As a trusted Managed Service Provider, we offer proactive IT support, cybersecurity, cloud, Microsoft 365, VoIP, and business continuity services. Our expert team combines strategic vCIO insight with hands-on local support keeping systems secure, efficient, and aligned with your business goals. ... Read more
Services
- IT Services
- Business Services
Focus in
- Cyber Security
- VoIP
- Business VoIP
- Cloud VoIP
- Hosted VoIP
NA
2 - 9
2014
- Whitstable, United Kingdom
TecSec Services
Risk Management, Cyber security, Compliance & Governance
TecSec Services Ltd is your Trusted Technology Partner. Offering SME businesses with an range of IT services from Managed IT Support to more advanced Security and Governance Services. With 20 years IT experience we can provide expertise on all technical aspects including managed IT support, cloud and network services, internet and VoIP, cyber security, back-up, disaster recovery, business continuity, regulations and compliance. We are qualified, accredited and certified. TecSec is not your standard IT provider as we are a licensed Certification Body for the government-backed Cyber Essentials Cyber Essentials, Cyber Essentials Plus and IASME Cyber Assurance Schemes and can work with business to help them become compliant. ... Read more
Services
- IT Services
Focus in
- Cyber Security
- IT & Networking
$25 - $49
10 - 49
2017
- Sheffield, United Kingdom
Stabilise is London's premier Apple business technology partner, specialising in comprehensive Mac ecosystem management for growing businesses.We go beyond traditional IT support. By combining infrastructure expertise with strategic consultancy, we transform Apple technology from a cost centre into a growth catalyst for creative agencies, scale-ups, and professional services firms.Our services span complete device management (MDM, identity, security), unlimited user support across London, and fractional CTO services for businesses needing strategic technology leadership without full-time hires.Infrastructure uptime, we've proven that Apple-first environments deliver measurable business value when managed by specialists who truly understand the ecosystem.Whether you're migrating from PC, scaling your Mac fleet, or need strategic guidance on business technology, we deliver both tactical excellence and long-term innovation. ... Read more
Services
- IT Services
Focus in
- Cyber Security
- IT Consulting
- IT & Networking
$50 - $99
2 - 9
2025
- London, United Kingdom
The Berkeley Partnership is a specialist management consultancy focused on helping organisations achieve successful transformation in complex, challenging, and high-stakes environments. Founded in 1990, the firm partners with business leaders to turn strategic ambitions into measurable outcomes through expert advice, practical delivery support, and long-term collaboration.With offices in London and New York, The Berkeley Partnership works with organisations across industries to navigate major business changes, from strategy development and operating model design to digital transformation, technology programmes, organisational change, and large-scale transformation delivery. The companyâs approach combines deep consulting expertise with hands-on involvement, embedding experienced consultants within client teams to help solve critical challenges and deliver lasting results.Unlike traditional consulting models that rely on large teams and standardised solutions, Berkeley focuses on high-value, tailored consulting delivered by experienced professionals. The firm works closely with leadership teams, providing independent perspectives, strategic guidance, and practical support throughout the transformation journey. Its consultants bring cross-sector experience and a flexible approach designed around each organisationâs unique goals and circumstances.The Berkeley Partnership is recognised for building trusted, long-term relationships with clients by prioritising quality, collaboration, and meaningful impact. Its mission is to help organisations create sustainable change, strengthen capabilities, and achieve outcomes that continue to deliver value beyond the completion of individual projects. ... Read more
Services
- IT Services
- Big Data & BI
- Business Services
Focus in
- Digital Transformation Consulting
- Cyber Security
< $25
50 - 249
1990
- London, United Kingdom
Deep Blue Backup
Reliable UK Cloud Backup for SaaS & devices with transparent fixed pricing
Deep Blue Backup is a UK specialist Backup as a Service provider for SMEs and IT providers. Services include cloud backup for Windows, Mac, Linux, servers, NAS and virtual machines, plus Microsoft 365, Google Workspace, Box and Dropbox backup. UK cloud storage, storage-based pricing and direct UK support.Â
Services
- IT Services
Focus in
- Cyber Security
- IT Consulting
NA
Freelancer
2018
- Totnes, United Kingdom
Intelance
UK advisory and assurance firm for cyber, ISO 27001, AI and architecture
Intelance is a UK advisory and assurance firm helping leadership teams control technology, AI, cyber and data risk. The firm covers enterprise architecture, technology strategy, cyber security, ISO 27001 and compliance advisory, AI governance, data governance, technology delivery assurance, M&A technology due diligence and retained fractional leadership.Intelance is an IASME licensed certification body for Cyber Essentials, Cyber Essentials Plus certified, a TOGAF Licensed Organisation and ICO registered. Delivery is senior only, with fixed fees published on every service page before work starts.The firm serves UK mid-market and private equity backed organisations of roughly 20 to 500 people from its office in Staines-upon-Thames. Founded in 2017 and registered in England and Wales, Intelance was formerly known as Bluechess Group before rebranding to Intelance in 2022. ... Read more
Services
- IT Services
- Artificial Intelligence
Focus in
- IT Consulting
- Cyber Security
$200 - $300
10 - 49
2017
- Staines, United Kingdom
Senri is a London managed IT and cybersecurity provider for small businesses of 1 to 50 people, founded by Ethan Fernandes, a Senior IT Infrastructure & Security Engineer with 10+ years of experience supporting over 1,000 users and 500+ devices across Windows, Chromebook and Apple platforms. Our team of six covers IT support, cybersecurity, AI automation and web development, so small businesses get the kind of tech team usually only larger organisations have. We provide helpdesk support, Microsoft 365 administration, Intune device management, backup and disaster recovery, Cyber Essentials and Cyber Essentials Plus preparation, custom AI workflow automation (n8n, Claude, GPT), and website design and hosting. Everything is security-first, with one flat monthly fee, no long-term contracts and an under 30-minute response time for existing clients. Based in Brentford, West London, with on-site support across London and the South East and remote support anywhere in the UK. ... Read more
Services
- Web Design
- IT Services
- Web Hosting
- SEO
Focus in
- Managed IT
- Cyber Security
$50 - $99
2 - 9
2025
- Brentford, United Kingdom
OkamiSec
Website security, performance, technical SEO and AI-search readiness for UK
OkamiSec is an independent UK consultancy founded by Constantin Ovidiu Strinu, built around the Okami Web Intelligence Framework â a five-pillar methodology covering AI readiness, technical SEO, performance, accessibility and security.Every engagement starts with a free Website Intelligence Assessment: a hand-reviewed report across all five pillars, delivered within 24 hours, with prioritised recommendations. From there, clients can implement fixes themselves or bring OkamiSec in for the work â website security audits, Cyber Essentials readiness, secure website builds, performance optimisation and AI-search (GEO/AEO) implementation.OkamiSec has particular depth in the UK dental and medical sector, combining security and web engineering expertise with direct operational experience in dental practice environments. ... Read more
Services
- Web Development
- IT Services
- Artificial Intelligence
- SEO
Focus in
- Cyber Security
- Digital Transformation Consulting
- IT Consulting
< $25
Freelancer
2026
- Harrow, United Kingdom
ITJobBoard.co.uk - the leading UK IT job board. Search information technology jobs and apply online. IT job search and online IT recruitment advertising services. The IT JOB BOARD helps technology professionals manage their careers and employers connect with highly skilled tech talent.
Services
- IT Services
Focus in
- Cyber Security
- Outsourcing
- Database Administration
- IT & Networking
- Staff Augmentation
NA
10 - 49
2010
- London, United Kingdom