Company lists · Data verified August 2026

Top 25 Defense systems integrators based in the United Kingdom

Name: Defense systems integrators 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 80 companies tracked

There are 80 defense systems integrators headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 4,141 professional contacts across them, including 1,426 with verified work emails and 608 with mobile numbers. London is the largest hub.

This list covers defense systems integrators 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.

80Companies

4,141Contacts tracked

1,426Verified emails

608Mobile numbers

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The 25 largest defense systems integrators based in the United Kingdom

Ranked by team size

Top 25 of 80 defense systems integrators 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	Cobham	Christchurch	501-1,000	796	11
2	Metrea	London	501-1,000	674	143
3	Trinity Fire & Security Systems	Wallsend	501-1,000	385	217
4	Chelton	Redhill	201-500	274	186
5	IDS Ingegneria DEI Sistemi	Fareham	201-500	240	114
6	Evolution Electronic Security Systems LTD	Birmingham	201-500	202	150
7	Chess Dynamics	Horsham	201-500	177	119
8	Elbit Systems UK	n/a	501-1,000	135	61
9	STS Defence	Gosport	51-200	122	60
10	European Electronique	Witney	51-200	116	51
11	Steatite Limited	Redditch	51-200	114	60
12	Total Integrated Solutions TIS LTD	Leeds	51-200	96	64
13	Alphatrack Systems	Harlow	201-500	56	34
14	Parico	Bordon	11-50	33	25
15	Grantfen Fire & Security LTD	Preston	11-50	30	23
16	Kore Systems LTD	London	11-50	27	17
17	Principle Networks	London	11-50	22	20
18	Itsus Consulting	Llanishen Cardiff South	11-50	20	13
19	KAON	Guildford	11-50	20	1
20	Exsel Group	London	51-200	17	8
21	Alchem Technologies LTD	London	1-10	14	9
22	Espanaro	Newtown Wales	11-50	14	7
23	Defense Advancement	Christchurch	11-50	11	1
24	Exsel Electronics Limited	Welshpool	11-50	10	7
25	Ansador Fire & Security	London	51-200	6	5

Showing 25 of 80 defense systems integrators based in the United Kingdom

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Defense systems integrators based in the United Kingdom at a glance

As of Aug 28, 2026

11-50Median size (employees)

LondonLargest hub · 18 HQs

608Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

Defense systems integrators by metro

Metro	Companies
Defense systems integrators in London	18
Defense systems integrators in Hereford	4
Defense systems integrators in Welshpool	2
Defense systems integrators in Henley-On-Thames	2
Defense systems integrators in Poole	2
Defense systems integrators in Bristol	2
Defense systems integrators in Shipley	2
Defense systems integrators in Christchurch	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 “defense systems integrators”, 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; 1 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 defense systems integrators are there based in the United Kingdom?

There are 80 defense systems integrators headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Cobham, headquartered in Christchurch, tops this list with the largest team on record.

Which city has the most defense systems integrators?

London leads with 18 headquartered companies, followed by Hereford (4) and Welshpool (2).

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 1,426 verified decision-maker contacts tracked across these 80 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

Defense systems integrators 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.