Company lists · Data refreshed November 2026

Top 25 Nuclear engineering companies based in the United Kingdom

RevenueBase identified 148 company matches for nuclear engineering companies associated with the United Kingdom as of November 2026 and tracks 10,603 professional contacts across them, including 2,605 with verified work emails. Bristol is the largest hub.

This list covers company matches for nuclear engineering companies associated with the 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 November 5, 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 Nov 5, 2026 How this list was built
148Companies
10,603Contacts tracked
2,605Verified emails
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The 25 largest nuclear engineering companies based in the United Kingdom

Ranked by team size
Top 25 of 148 company matches for nuclear engineering companies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 matchBirchwood, United KingdomHQ recorded Nov 5, 20265,001-10,0001,725 contacts →

Exact match

“Cavendish Nuclear is a core part of Babcock International Group’s Nuclear Sector.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchSouthampton, United KingdomHQ recorded Nov 5, 2026501-1,000421 contacts →

Exact match

“Trant Engineering Ltd is one of the leading, privately owned engineering companies in the UK.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchChester, United KingdomHQ recorded Nov 5, 2026501-1,000382 contacts →

Exact match

“Urenco Capenhurst is the Cheshire base for three Urenco companies.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchChorley, United KingdomHQ recorded Nov 5, 2026501-1,000307 contacts →

Exact match

“We support our clients by delivering safe, practical and efficient solutions to complex nuclear challenges, with a strong focus on disposability.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchBristol, United KingdomHQ recorded Nov 5, 2026201-500212 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchPembroke Dock, United KingdomHQ recorded Nov 5, 202651-20096 contacts →

Exact match

“InSite Technical Services is the partner you can rely on to support any engineering requirement.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchAbingdon, United KingdomHQ recorded Nov 5, 202651-20087 contacts →

Exact match

“Orano transforms nuclear materials so that they can be used to support the development of society, first and foremost in the field of energy.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchWynyard, United KingdomHQ recorded Nov 5, 202611-5068 contacts →

Exact match

“JBA are industry-leading consultants, providing flexible engineering and design solutions, procurement, and construction services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchCarlisle, United KingdomHQ recorded Nov 5, 202651-20053 contacts →

Exact match

“Bendalls Engineering has a strong reputation in engineering, located in Carlisle, Cumbria.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchCleator, United KingdomHQ recorded Nov 5, 202611-5050 contacts →

Exact match

“React brings strategic clarity and delivery leadership to complex challenges in highly regulated sectors.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchThurso, United KingdomHQ recorded Nov 5, 202651-20043 contacts →

Exact match

“JGC is one of the UK's leading engineering companies with the breadth and depth of technical expertise to respond to the daily complex challenges of major engineering projects.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchWorkington, United KingdomHQ recorded Nov 5, 202611-5039 contacts →

Exact match

“CORE Nuclear Solutions is a specialist nuclear remote engineering SME based at Lillyhall in Workington.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchNr Atherstone, United KingdomHQ recorded Nov 5, 2026501-1,00035 contacts →

Exact match

“On Monday 22nd August, Promanex was acquired by Costain Limited, a Costain Group Company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-20032 contacts →

Exact match

“TRX is a leading nuclear recruitment company with a core focus on helping shape and implement a zero-carbon future.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchStafford, United KingdomHQ recorded Nov 5, 202611-5029 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchHexham, United KingdomHQ recorded Nov 5, 202611-5029 contacts →

Exact match

“RED Engineering is a trusted engineering partner to global clients operating in hazardous environments.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchWhaley Bridge, United KingdomHQ recorded Nov 5, 202611-5028 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchWigan, United KingdomHQ recorded Nov 5, 202611-5026 contacts →

Exact match

“Sanderson Watts Associates (SWA) is a civil and structural engineering consultancy whose aim is to achieve cost effective and quality design solutions that fulfil our clients’…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchBirchwood, United KingdomHQ recorded Nov 5, 202611-5024 contacts →

Exact match

“Cerberus Nuclear is a technical consultancy with over 100 cumulative years experience specialising in Radiation Shielding, Criticality Safety and Nuclear Characterisation.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchBridgwater, United KingdomHQ recorded Nov 5, 202611-5023 contacts →

Exact match

“AMS Nuclear Engineering is a specialist Electrical, Control & Instrumentation (EC & I) engineering company supporting organisations across the UK nuclear sector.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchBristol, United KingdomHQ recorded Nov 5, 202611-5022 contacts →

Exact match

“Established in France over 33 years ago, CERAP Prevention now operates all over the world, employing over 600 people who all work together to support their customers efficiently…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchConwy, United KingdomHQ recorded Nov 5, 202651-20021 contacts →

Exact match

“A leading UK based company, with an international presence and a portfolio of technical excellence.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchTwyford, United KingdomHQ recorded Nov 5, 202651-20018 contacts →

Exact match

“Cyclife Aquila Nuclear has now merged with Cyclife UK Ltd to bring together our complementary expertise and strong industry reputations to form a single, unified UK entity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchAltrincham, United KingdomHQ recorded Nov 5, 202611-5018 contacts →

Exact match

“EASL is an advanced engineering consultancy specialising in providing cost-effective solutions to structural integrity problems.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchThe Axis Centre, United KingdomHQ recorded Nov 5, 202611-5018 contacts →

Exact match

“ETD Consulting provides independent technical engineering consulting and on-site services, innovative products and high quality training to the Power and Process Plant industries.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 148 nuclear engineering companies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 2,605 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nuclear engineering companies based in the United Kingdom at a glance

As of Nov 5, 2026
24.6%Verified-email coverage
71.6Average contacts per company
1-10Median size (employees)
6.8%Largest-city concentration · Bristol
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
75
11-50
44
51-200
10
201-500
5
501-1,000
7
1,001-5,000
2
5,001-10,000
3

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 148 companies.

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 the United Kingdom whose business descriptions match “nuclear engineering companies” 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 2,605 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 November 5, 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 “nuclear engineering companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many nuclear engineering companies are there based in the United Kingdom?

RevenueBase identified 148 company matches for nuclear engineering companies associated with the United Kingdom as of November 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?

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

Which city has the most nuclear engineering companies?

Bristol leads with 10 company records, followed by London (10) and Warrington (7).

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 2,605 professional contacts with verified work emails tracked across these 148 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 November 5, 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.