Company lists · Data refreshed September 2026

Top 24 Nuclear decommissioning software companies based in the United Kingdom

RevenueBase identified 55 nuclear decommissioning software companies headquartered in the United Kingdom as of September 2026 and tracks 5,592 professional contacts across them, including 1,440 with verified work emails and 315 with mobile numbers. Aberdeen is the largest hub.

This list covers nuclear decommissioning software companies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
55Companies
5,592Contacts tracked
1,440Verified emails
315Mobile numbers
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The 24 largest nuclear decommissioning software companies based in the United Kingdom

Ranked by team size
Top 24 of 55 nuclear decommissioning software companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names nuclear decommissioning software companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Cavendish NuclearPartial evidence
Birchwood, United KingdomHQ checked Sep 5, 20265,001-10,0001,592

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

Source: company website · checked Sep 5, 2026
2
NSG Environmental LTDPartial evidence
Chorley, United KingdomHQ checked Sep 5, 2026501-1,000297

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

Source: company website · checked Sep 5, 2026
3
Veolia Nuclear SolutionsPartial evidence
Abingdon, United KingdomHQ checked Sep 5, 2026501-1,000284

“Veolia’s Nuclear Expertise: As part of the global Veolia Group, we deliver integrated nuclear solutions that combine cutting-edge technology, engineering excellence, and decades…”

Source: company website · checked Sep 5, 2026
4
Framatome UKIndirect evidence
Bristol, United KingdomHQ checked Sep 5, 2026201-500181
Source: company website · checked Sep 5, 2026
5Cheshire, United KingdomHQ checked Sep 5, 202651-20070

“Urenco Nuclear Stewardship brings unrivalled innovation and expertise to nuclear decommissioning and materials recycling & management, for a safe sustainable and circular nuclear…”

Source: company website · checked Sep 5, 2026
6Bolton, United KingdomHQ checked Sep 5, 202651-20054

“Founded in 1990 and acquired by Veolia in 2018, KDC Veolia has established itself as a leading specialist in end-of-asset-life solutions, providing comprehensive decommissioning…”

Source: company website · checked Sep 5, 2026
7
React Engineering LimitedIndirect evidence
Cleator, United KingdomHQ checked Sep 5, 202611-5047

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

Source: company website · checked Sep 5, 2026
8
Cyclife Aquila NuclearPartial evidence
Twyford, United KingdomHQ checked Sep 5, 202651-20035

“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.”

Source: company website · checked Sep 5, 2026
9Workington, United KingdomHQ checked Sep 5, 202611-5033

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

Source: company website · checked Sep 5, 2026
10
NMC EnergyIndirect evidence
Aberdeen, United KingdomHQ checked Sep 5, 202611-5031

“NMC Energy is a dynamic and fast growing company at the forefront of the energy sector, building strong, collaborative partnerships with customers across the UK, Europe, and…”

Source: company website · checked Sep 5, 2026
11
Cerap UKIndirect evidence
Bristol, United KingdomHQ checked Sep 5, 202611-5023

“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…”

Source: company website · checked Sep 5, 2026
12
Matom LTDIndirect evidence
Conwy, United KingdomHQ checked Sep 5, 202651-20021

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

Source: company website · checked Sep 5, 2026
13
TRXPartial evidence
London, United KingdomHQ checked Sep 5, 202651-20018

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

Source: company website · checked Sep 5, 2026
14
RVA GroupIndirect evidence
London, United KingdomHQ checked Sep 5, 202611-5015

“RVA Group has grown to become a globally renowned project management and engineering organisation, providing knowledge-based support that ensures the successful delivery of…”

Source: company website · checked Sep 5, 2026
15Warrington, United KingdomHQ checked Sep 5, 202611-5015

“Stantec is a global leader in sustainable engineering, architecture, and environmental consulting.”

Source: company website · checked Sep 5, 2026
16
Decom MissionPartial evidence
Westhill, United KingdomHQ checked Sep 5, 20261-1011

“Decom Mission is the only independent trade association focused on decommissioning in the international energy industry.”

Source: company website · checked Sep 5, 2026
17
Phoenix Decom LTDPartial evidence
Aberdeen, United KingdomHQ checked Sep 5, 20261-109

“Your trusted decommissioning delivery partner Our comprehensive turnkey solutions cover everything from quayside logistics to waste and NORM management, ensuring a seamless…”

Source: company website · checked Sep 5, 2026
18Edinburgh, United KingdomHQ checked Sep 5, 20261-106

“The primary purpose of Nuclear Liabilities Fund Limited is to receive and hold monies, investments and other assets, in order to secure funding for discharging certain liabilities…”

Source: company website · checked Sep 5, 2026
19Ellesmere Port, United KingdomHQ checked Sep 5, 202611-505

“The decommissioning solution provider Crest Environmental Services has rapidly grown over the past years into one of the most competitive Contractors in Europe in the…”

Source: company website · checked Sep 5, 2026
20
Wellcut SolutionsPartial evidence
Great Yarmouth, United KingdomHQ checked Sep 5, 20261-102

“We will provide a safe and cost-efficient service to our clients by leveraging our team’s extensive knowledge and hands-on experience managing decommissioning projects.”

Source: company website · checked Sep 5, 2026
21
Hughes And Salvidge LTDPartial evidence
Portsmouth, United KingdomHQ checked Sep 5, 202651-2002

“Hughes and Salvidge is one of the UK’s leading demolition and decommissioning companies, established in 1964, with a reputation for Health and Safety, Quality and Innovation.”

Source: company website · checked Sep 5, 2026
22
DecommologyPartial evidence
St Bees, United KingdomHQ checked Sep 5, 20261-102

“Decommology: Applying knowledge, understanding and skills of decommissioning to reduce the costs and risks of decommissioning.”

Source: company website · checked Sep 5, 2026
23
Genesis Nuclear LTDPartial evidence
Monmouth, United KingdomHQ checked Sep 5, 20261-101

“Providing Specialist Consultancy Services to the Nuclear Sector Genesis was launched in 2015 to provide strategic support to Clients across the nuclear sector.”

Source: company website · checked Sep 5, 2026
24Oxford, United KingdomHQ checked Sep 5, 20261-101

“AVER is a specialist decommissioning and environmental consultancy working across a wide range of industrial sectors in the UK and overseas.”

Source: company website · checked Sep 5, 2026

Showing 24 of 55 nuclear decommissioning software companies based in the United Kingdom

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Nuclear decommissioning software companies based in the United Kingdom at a glance

As of Sep 5, 2026
11-50Median size (employees)
AberdeenLargest hub · 4 HQs
315Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
21
11-50
11
51-200
7
201-500
8
501-1,000
4
1,001-5,000
3
5,001-10,000
1

Verified emails by last verification

0–30
1,352
31–60
86
61–90
0
90–180
0
180+
2

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among nuclear decommissioning software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

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
Companies headquartered in the United Kingdom whose own description of what they do matches “nuclear decommissioning software companies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among nuclear decommissioning software companies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,440 across the full list. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

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

RevenueBase identified 55 nuclear decommissioning software companies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Cavendish Nuclear, headquartered in Warrington, tops this list with the largest team on record.

Which city has the most nuclear decommissioning software companies?

Aberdeen leads with 4 headquartered companies, followed by Bristol (4) and London (4).

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 1,440 verified decision-maker contacts tracked across these 55 companies.

How current is this list?

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