Company lists · Data refreshed September 2026

Top 25 Defense systems integration consultants based in London, United Kingdom

RevenueBase identified 69 company matches for defense systems integration consultants associated with London, United Kingdom as of September 2026 and tracks 570 professional contacts across them, including 269 with verified work emails and 37 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for defense systems integration consultants associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 10, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 10, 2026 How this list was built
69Companies
570Contacts tracked
269Verified emails
37Mobile numbers
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The 25 largest defense systems integration consultants based in London, United Kingdom

Ranked by team size
Top 25 of 69 company matches for defense systems integration consultants based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 10, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 10, 202651-20078 contacts →

Exact match

“Principle One provides Systems Engineering, Architecture and Business Consulting services within the Law Enforcement, National Security, Health and wider public sector.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 10, 202651-20060 contacts →

Exact match

“We provide deep expertise with technical and business specialists to help clients secure and protect the UK.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 10, 202651-20033 contacts →

Exact match

“With over three decades of experience in the communications and technology sector, Commercis has established itself as a trusted leader in delivering global connectivity…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 10, 202611-5024 contacts →

Exact match

“Principle Networks works with commercial and regulated organisations to reduce cyber risk and cost by simplifying security and network architecture.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 10, 202611-5022 contacts →

Exact match

“Specialsing in cybersecurity, networks, voice and video, we're on a mission to transform workspaces and deliver exceptional outcomes for our clients.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 10, 202611-5020 contacts →

Exact match

“Formed in 2018, NGS (UK) Ltd are independent, Next Generation Security trusted advisors, providing all-encompassing solutions from the perimeter to the endpoint.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 10, 20261,001-5,00018 contacts →

Exact match

“IGXGlobal is a technology systems integrator at the forefront of digital transformation.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 10, 202651-20018 contacts →

Exact match

“The Exsel Group is a leading independent defence technology solutions company – providing engineering solutions, technology systems and support services to Defence and Industry…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 10, 202611-5017 contacts →

Exact match

“Shield Reply specialises in driving technology-led transformational change for Defence and Security customers through the design and delivery of cloud-based services and solutions…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 10, 20261-1014 contacts →

Exact match

“Alchem is a data and systems integrator providing high-end technical capabilities in the national security, defence, and critical infrastructure sectors.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 10, 202651-20014 contacts →

Exact match

“SYLVERSYS is a solutions integration firm with a specialty in providing secure computer and network products/solutions for businesses and organizations in the private and public…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 10, 202611-5014 contacts →

Exact match

“Adaptivity is a specialist systems integration consultancy.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 10, 202611-509 contacts →

Exact match

“Pxosys is a Digital Systems Integrator and Solutions Provider.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 10, 202651-2006 contacts →

Exact match

“Ansador Ltd has been privately owned since it was founded in 1982, providing system solutions to corporate and global clients across EMEA.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 10, 20261-105 contacts →

Exact match

“London based security systems integrator presently engaged on some of the most existing London landmark buildings.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 10, 202611-504 contacts →

Exact match

“At Alchemise, we transform complexity into clarity.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 10, 202611-504 contacts →

Exact match

“At RSV Solutions, we understand the challenges of thriving in today's digital landscape.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 10, 20261-103 contacts →

Exact match

“i15 is a consultancy, and solutions partner, founded by a dedicated group of IT professionals with a collective 80+ year track record of successfully designing, engineering…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 10, 20261-103 contacts →

Exact match

“NLP Consult Ltd offer bespoke Design, Project Management, Supply Chain Development, Commissioning and Delivery of Integrated Systems in compliance with industry standards.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 10, 202611-502 contacts →

Exact match

“Good security consultants are difficult to find, expensive to employ and hard to keep, but we believe that your business doesn’t have to incur a high cost of delivery in order to…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 10, 20261-102 contacts →

Exact match

“Architecture Without Illusion.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 10, 20261-102 contacts →

Exact match

“MC Engineered Solutions Ltd are a leading Fire and Security Systems integrator specializing in assessing risk and designing suitable solutions for every application.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 10, 20261-102 contacts →

Exact match

“We support US, Canadian and UK business with complex projects, ranging from creating new tools and strategies to aid business development through to detailed product analysis and…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 10, 20261-101 contacts →

Exact match

“Stackcrafters provide consultancy and contract services for software systems.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 10, 20261-101 contacts →

Exact match

“SS & S has been established to provide integrated security solutions in response to ever-changing threats and needs.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase

Showing 25 of 69 defense systems integration consultants based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 269 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Defense systems integration consultants based in London, United Kingdom at a glance

As of Sep 10, 2026
47.2%Verified-email coverage
6.5%Mobile-number coverage
8.3Average contacts per company
1-10Median size (employees)
Sep 10, 2026Page data refreshed

Companies by employee count

1-10
36
11-50
22
51-200
10
1,001-5,000
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 12.0d

Company record updated

Median 62.0d

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with London, United Kingdom whose business descriptions match “defense systems integration consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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
Every displayed company carries at least one verified work email. RevenueBase tracks 269 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 10, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “defense systems integration consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many defense systems integration consultants are there based in London, United Kingdom?

RevenueBase identified 69 company matches for defense systems integration consultants associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Principle ONE tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most defense systems integration consultants?

London leads the United Kingdom with 68 company records, followed by Bristol (10) and Manchester (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 269 professional contacts with verified work emails tracked across these 69 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 10, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.