{"id":962435,"date":"2025-11-13T14:00:08","date_gmt":"2025-11-13T14:00:08","guid":{"rendered":"https:\/\/ukpostcode.org\/content\/?p=962435"},"modified":"2025-11-13T14:00:08","modified_gmt":"2025-11-13T14:00:08","slug":"top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes","status":"publish","type":"post","link":"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/","title":{"rendered":"Top 20 Cybersecurity Agencies in the UK \u2013 Descriptions, Addresses, and Postcodes"},"content":{"rendered":"<p>&nbsp;<\/p>\n<hr \/>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_73 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/#1_Darktrace_Holdings_Ltd\" title=\"1. Darktrace Holdings Ltd\">1. Darktrace Holdings Ltd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/#2_NCC_Group_PLC\" title=\"2. NCC Group PLC\">2. NCC Group PLC<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/#3_BAE_Systems_Digital_Intelligence\" title=\"3. BAE Systems Digital Intelligence\">3. BAE Systems Digital Intelligence<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/#4_Egress_Software_Technologies_Ltd\" title=\"4. Egress Software Technologies Ltd\">4. Egress Software Technologies Ltd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/#5_Sophos_Group_plc\" title=\"5. Sophos Group plc\">5. Sophos Group plc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/#1_NCC_Group_plc\" title=\"1. NCC Group plc\">1. NCC Group plc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/#2_Sophos_Ltd\" title=\"2. Sophos Ltd\">2. Sophos Ltd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/#3_Darktrace_Holdings_Ltd\" title=\"3. Darktrace Holdings Ltd\">3. Darktrace Holdings Ltd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/#4_BAE_Systems_Digital_Intelligence\" title=\"4. BAE Systems Digital Intelligence\">4. BAE Systems Digital Intelligence<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/#5_Netcraft_Ltd\" title=\"5. Netcraft Ltd\">5. Netcraft Ltd<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"1_Darktrace_Holdings_Ltd\"><\/span>1. Darktrace Holdings Ltd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Description<\/strong>: A UK-based cyber security company founded in 2013, known for its AI-driven \u201cself-learning\u201d cyber defence platform that detects and responds to novel threats in real time. (<a title=\"Darktrace\" href=\"https:\/\/en.wikipedia.org\/wiki\/Darktrace?utm_source=chatgpt.com\">Wikipedia<\/a>)<\/li>\n<li><strong>Address<\/strong>: Maurice Wilkes Building, St John\u2019s Innovation Park, Cowley Road, Cambridge CB4 0DS, United Kingdom. (<a title=\"About Darktrace PLC (DARK) for investors - Investing.com UK\" href=\"https:\/\/uk.investing.com\/equities\/darktrace-company-profile?utm_source=chatgpt.com\">Investing.com UK<\/a>)<\/li>\n<li><strong>Postcode<\/strong>: CB4 0DS<\/li>\n<\/ul>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"2_NCC_Group_PLC\"><\/span>2. NCC Group PLC<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Description<\/strong>: A major UK information assurance and cybersecurity consultancy, offering services including penetration testing, risk and compliance consulting, software escrow, and managed security services. (<a title=\"NCC Group\" href=\"https:\/\/en.wikipedia.org\/wiki\/NCC_Group?utm_source=chatgpt.com\">Wikipedia<\/a>)<\/li>\n<li><strong>Address<\/strong>: XYZ Building, 2 Hardman Boulevard, Spinningfields, Manchester M3 3AQ, United Kingdom. (<a title=\"Get In Contact | NCC Group\" href=\"https:\/\/www.nccgroup.com\/contact-us\/?utm_source=chatgpt.com\">NCC Group<\/a>)<\/li>\n<li><strong>Postcode<\/strong>: M3 3AQ<\/li>\n<\/ul>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"3_BAE_Systems_Digital_Intelligence\"><\/span>3. BAE Systems Digital Intelligence<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Description<\/strong>: A division of BAE Systems, specialising in cyber, digital intelligence and threat intelligence services. It provides defence-grade cyber solutions to governments, critical infrastructure and commercial sectors. (<a title=\"BAE Systems Digital Intelligence\" href=\"https:\/\/en.wikipedia.org\/wiki\/BAE_Systems_Digital_Intelligence?utm_source=chatgpt.com\">Wikipedia<\/a>)<\/li>\n<li><strong>Address<\/strong>: Waterside House, Surrey Research Park, 170 Priestley Road, Guildford, Surrey GU2 7RQ, United Kingdom. (<a title=\"BAE Systems Digital Intelligence | 0330 158 5268 | Guildford\" href=\"https:\/\/www.bizseek.co.uk\/bae-systems-detica_2L-0330-158-5268?utm_source=chatgpt.com\">BizSeek<\/a>)<\/li>\n<li><strong>Postcode<\/strong>: GU2 7RQ<\/li>\n<\/ul>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"4_Egress_Software_Technologies_Ltd\"><\/span>4. Egress Software Technologies Ltd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Description<\/strong>: A UK-based company providing secure email and messaging software, file &amp; document handling, and compliance\/security solutions \u2014 focused more on software security than broad consulting. (<a title=\"Egress Software\" href=\"https:\/\/en.wikipedia.org\/wiki\/Egress_Software?utm_source=chatgpt.com\">Wikipedia<\/a>)<\/li>\n<li><strong>Address<\/strong>: (Head office) London, United Kingdom. [Exact detailed address + postcode not verified in open source for the head-office in my search.]<\/li>\n<li><strong>Postcode<\/strong>: <em>Not available from the sources I checked.<\/em><\/li>\n<\/ul>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"5_Sophos_Group_plc\"><\/span>5. Sophos Group plc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Description<\/strong>: A UK headquartered (Abingdon) cybersecurity firm specialising in endpoint protection, firewall, network security and managed detection &amp; response services. (<a title=\"Top 20 Cyber Security Service Providers in UK (2025 Guide)\" href=\"https:\/\/qualysec.com\/cyber-security-service-providers-uk\/?utm_source=chatgpt.com\">Qualysec<\/a>)<\/li>\n<li><strong>Address<\/strong>: Abingdon, United Kingdom. [Exact street address + postcode not verified in my search.]<\/li>\n<li><strong>Postcode<\/strong>: <em>Not available from the sources I checked.<\/em><\/li>\n<\/ul>\n<hr \/>\n<p>Here are <strong>five<\/strong> prominent UK-based cybersecurity agencies with descriptions, addresses and postcodes, plus a few comments and mini-case study insights. (Going all the way to 20 would require deeper digging and verification; if you like I can provide a full list of 20 with less detail.)<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"1_NCC_Group_plc\"><\/span>1. NCC Group plc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Address<\/strong>: XYZ Building, 2 Hardman Boulevard, Spinningfields, Manchester, M3 3AQ, UK. (<a title=\"NCC GROUP PLC, M3 3AQ : Companies House Number 04627044\" href=\"https:\/\/www.companiesintheuk.co.uk\/ltd\/ncc-group?utm_source=chatgpt.com\">Companies In The UK<\/a>)<br \/>\n<strong>Description<\/strong>: A large UK cyber-resilience and information assurance firm. They provide consulting, managed services, software escrow, penetration testing and risk advisory globally. (<a title=\"NCC Group\" href=\"https:\/\/en.wikipedia.org\/wiki\/NCC_Group?utm_source=chatgpt.com\">Wikipedia<\/a>)<br \/>\n<strong>Comment \/ Mini Case<\/strong>:<br \/>\nThey serve highly regulated clients (banks, infrastructure) and highlight the value of combining technical testing (e.g., pen-testing) with strategic risk management. One takeaway: when engaging a firm like NCC, make sure the scope covers both \u201cwhat\u2019s vulnerable\u201d <em>and<\/em> \u201cwhat business risk that implies\u201d.<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"2_Sophos_Ltd\"><\/span>2. Sophos Ltd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Address<\/strong>: The Pentagon, Abingdon Science Park, Abingdon, Oxfordshire, OX14 3YP, UK. (<a title=\"Sophos Limited | ICO\" href=\"https:\/\/ico.org.uk\/ESDWebPages\/Entry\/Z7450975?utm_source=chatgpt.com\">ICO<\/a>)<br \/>\n<strong>Description<\/strong>: A well-known cybersecurity vendor and service provider, offering endpoint protection, network security, managed detection &amp; response and more. (<a title=\"Sophos - Tech Monitor\" href=\"https:\/\/www.techmonitor.ai\/companies\/sophos?utm_source=chatgpt.com\">Tech Monitor<\/a>)<br \/>\n<strong>Comment \/ Mini Case<\/strong>:<br \/>\nSophos shows the shift from \u201cjust antivirus\u201d to holistic detection, response and risk management. For organisations picking a partner, note how Sophos emphasises being \u201ccloud-native and AI-enhanced\u201d in their marketing \u2014 an indicator that modern threats demand modern architectures.<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"3_Darktrace_Holdings_Ltd\"><\/span>3. Darktrace Holdings Ltd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Address<\/strong>: Maurice Wilkes Building, St John\u2019s Innovation Park, Cowley Road, Cambridge, CB4 0DS, UK. (<a title=\"Darktrace Limited - Company Profile - Endole\" href=\"https:\/\/open.endole.co.uk\/insight\/company\/13264637-darktrace-plc?utm_source=chatgpt.com\">Endole<\/a>)<br \/>\n<strong>Description<\/strong>: UK-founded specialist in AI-driven threat detection and response, focusing on behavioural analytics across networks, endpoints, cloud and OT. (<a title=\"Darktrace \u2013 Info Security Index\" href=\"https:\/\/infosecindex.com\/companies\/3999\/?utm_source=chatgpt.com\">Info Security Index<\/a>)<br \/>\n<strong>Comment \/ Mini Case<\/strong>:<br \/>\nDarktrace\u2019s approach underlines the importance of anomaly detection rather than just signature-based security. One insight: for enterprises dealing with advanced threats, picking a provider that emphasises \u201clearns what normal looks like\u201d can be helpful, but you\u2019ll also want strong integration with existing tools and clear incident-response protocols.<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"4_BAE_Systems_Digital_Intelligence\"><\/span>4. BAE Systems Digital Intelligence<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Address<\/strong>: Guildford, Surrey, UK (Head Office) from their Wikipedia entry. (<a title=\"BAE Systems Digital Intelligence\" href=\"https:\/\/en.wikipedia.org\/wiki\/BAE_Systems_Digital_Intelligence?utm_source=chatgpt.com\">Wikipedia<\/a>)<br \/>\n<strong>Description<\/strong>: A major defence \/ national-security player in the UK with a strong cyber offering \u2014 digital intelligence, threat analytics, cyber defence services. (<a title=\"BAE Systems Digital Intelligence\" href=\"https:\/\/en.wikipedia.org\/wiki\/BAE_Systems_Digital_Intelligence?utm_source=chatgpt.com\">Wikipedia<\/a>)<br \/>\n<strong>Comment \/ Mini Case<\/strong>:<br \/>\nTheir profile demonstrates that for organisations dealing with critical-infrastructure, defence sectors or high-stakes risk, choosing a provider with \u201cdefence grade\u201d capabilities (intelligence, forensics, cross-domain) can matter. However, cost and complexity may be higher.<\/p>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"5_Netcraft_Ltd\"><\/span>5. Netcraft Ltd<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Address<\/strong>: London, UK (moved from Bath) \u2013 current HQ: London. (<a title=\"Netcraft\" href=\"https:\/\/en.wikipedia.org\/wiki\/Netcraft?utm_source=chatgpt.com\">Wikipedia<\/a>)<br \/>\n<strong>Description<\/strong>: Specialist in internet services and cybercrime disruption (web-hosting analytics, server security, phishing monitoring). (<a title=\"Netcraft\" href=\"https:\/\/en.wikipedia.org\/wiki\/Netcraft?utm_source=chatgpt.com\">Wikipedia<\/a>)<br \/>\n<strong>Comment \/ Mini Case<\/strong>:<br \/>\nNetcraft\u2019s niche indicates that cybersecurity isn\u2019t just \u201cfirewalls and endpoints\u201d \u2014 for businesses with heavy web-presence (hosting, e-commerce, large server estates), picking a partner experienced in web-threats, phishing and server-control is important. One lesson: verify provider has relevant domain expertise for your threat surface.<\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; 1. Darktrace Holdings Ltd Description: A UK-based cyber security company founded in 2013, known for its AI-driven \u201cself-learning\u201d cyber defence platform that detects and&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,6],"tags":[],"class_list":["post-962435","post","type-post","status-publish","format-standard","hentry","category-gb-news","category-uk-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Top 20 Cybersecurity Agencies in the UK \u2013 Descriptions, Addresses, and Postcodes - UK News &amp; Updates<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ukpostcode.org\/content\/top-20-cybersecurity-agencies-in-the-uk-descriptions-addresses-and-postcodes\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 20 Cybersecurity Agencies in the UK \u2013 Descriptions, Addresses, and Postcodes - UK News &amp; Updates\" \/>\n<meta property=\"og:description\" content=\"&nbsp; 1. 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