Company lists · Data verified August 2026

Top 25 Cybersecurity for city infrastructure based in the United Kingdom

Name: Cybersecurity for city infrastructure based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 194 companies tracked

There are 194 cybersecurity for city infrastructure headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 4,209 professional contacts across them, including 1,125 with verified work emails and 646 with mobile numbers. London is the largest hub.

This list covers cybersecurity for city infrastructure headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

194Companies

4,209Contacts tracked

1,125Verified emails

646Mobile numbers

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The 25 largest cybersecurity for city infrastructure based in the United Kingdom

Ranked by team size

Top 25 of 194 cybersecurity for city infrastructure based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Everfox	London	1,001-5,000	635	13
2	Bridewell	Edinburgh	201-500	304	189
3	Exclusive Networks UK	Mansfield	201-500	168	118
4	Cyberfort	Thatcham	51-200	160	88
5	Khipu Networks	Fleet	51-200	129	94
6	Foresite Cybersecurity	Farnborough	51-200	100	67
7	Wavenet Cyberguard	London	201-500	86	58
8	Reliance Cyber	Waterloo	51-200	80	47
9	Hexegic	London	51-200	52	30
10	Adarma Security	Edinburgh	201-500	52	23
11	Satisnet, A Gamma Company	Luton	51-200	46	8
12	Mitigo Group	Cheadle	51-200	42	18
13	Omerta	Saffron Walden	51-200	38	15
14	Cyberis	Tewkesbury	11-50	35	19
15	Secarma LTD	Manchester	11-50	34	23
16	Barrier Networks	London	11-50	33	22
17	Razorsecure	Basingstoke	11-50	32	26
18	Procheckup PCU	Portsmouth	11-50	30	18
19	Converged Communication Solutions	Aberdeen	11-50	29	24
20	ITB LTD	Eynsham	11-50	28	8
21	J2 Mssp	London	11-50	27	2
22	Protos Networks	West Chester	11-50	23	15
23	Blue Cube Security LTD	East Grinstead	11-50	23	15
24	Templar Executives	London	51-200	21	10
25	Secure Purple	London	11-50	20	2

Showing 25 of 194 cybersecurity for city infrastructure based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,125 reachable decision-makers.

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Cybersecurity for city infrastructure based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 79 HQs

646Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity for city infrastructure by metro

Metro	Companies
Cybersecurity for city infrastructure in London	79
Cybersecurity for city infrastructure in Manchester	8
Cybersecurity for city infrastructure in Oxford	5
Cybersecurity for city infrastructure in Bristol	4
Cybersecurity for city infrastructure in Birmingham	3
Cybersecurity for city infrastructure in Glasgow	3
Cybersecurity for city infrastructure in Cambridge	2
Cybersecurity for city infrastructure in Milton Keynes	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cybersecurity for city infrastructure”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Contact records re-verify on a rolling cadence; 2 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cybersecurity for city infrastructure are there based in the United Kingdom?

There are 194 cybersecurity for city infrastructure headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Everfox, headquartered in London, tops this list with the largest team on record.

Which city has the most cybersecurity for city infrastructure?

London leads with 79 headquartered companies, followed by Manchester (8) and Oxford (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,125 verified decision-maker contacts tracked across these 194 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Related lists

Cybersecurity for city infrastructure by geography

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.