PS.
PublicSupply
account_balanceBuyersbusinessSuppliersdescriptionNotices
BuyersSuppliersNotices
verified_userData sourced from Contracts Finder, Find a Tender, and Companies House.
Contracts Finder ↗Find a Tender ↗Procurement Act 2023 ↗
  1. Home›
  2. Suppliers›
  3. Construction work (CPV 45)›
  4. CAVENDISH NUCLEAR LIMITED
CN

CAVENDISH NUCLEAR LIMITED

Construction work · London
Large

Cavendish Nuclear Limited, a subsidiary of Babcock International Group, offers critical nuclear solutions across Clean Energy, Defence, and Civil Decommissioning sectors. They are involved in all stages of the nuclear lifecycle, focusing on decommissioning, supporting nuclear power operations, and developing advanced nuclear technologies.

cavendishnuclear.com ↗

Summary from the supplier’s website — unverified

Compare peers
Awarded
£840.9m
Live
33
Buyers
19
12m
£575.5m
At a glance
  • Quick answer
Profile
  • Social value
  • ESG & policies
  • Capabilities5
  • Buyer references
  • Accreditations
Track record · verified
  • KPI performance
  • Contracts33 / 79
  • Top buyers19
  • Category mix
  • Geography
  • Peers5
Trust & risk
  • Red flags0
  • Compliance
  • Modifications
  • News
Company
  • Companies House
  • Financial
  • Org tree
Quick answer — CAVENDISH NUCLEAR LIMITEDUpdated 06 Jul 2026

At a glance · for buyers and watchdogs

CAVENDISH NUCLEAR LIMITED has won £840.9m across 19 public-sector buyers, with 33 live contracts. No active Companies House risk flags.

Why: top buyer Sellafield Limited at 86% · 13% in Construction work · 0 active risk flags · 0 modifications.

Decision signals
0Active red flags
ActiveCompany status
33 of 79Live contracts
86%Top-buyer concentration
13%Category exposure
0Contract modifications
If you're a buyer:CapabilitiesReferencesKPIComplianceWatchdog?FlagsModificationsConcentrationNews

Social value

Commitments mapped to the Government Social Value Model themes.

⚑ Self-reported
—

No social-value commitments yet

Jobs, skills, environmental, inequality and community commitments appear here once a claimed supplier attributes them to awarded contracts, or once we detect them on the supplier’s website.

ESG & policies vault · 0/5

Key governance & sustainability policies. Published documents link out; missing ones are greyed.

↔ Cross-checked
Net-zero planNot provided✓
Modern slavery statementNot provided✓
EDI policyNot provided✓
Anti-briberyNot provided✓
Data protectionNot provided✓

Capabilities

What this supplier does, where they sit, who they sell to.

◐ From website & notices
Sectors served · 2/8
Central government✓
Local government✓
NHS & health✓
Housing✓
Utilities & energy✓
Financial services✓
Education✓
Defence✓
Services · 4
Clean EnergySupport to existing reactors, construction of new reactors, and development of advanced nuclear technologies. ↗DefenceIntegration and delivery of complex engineering projects in the defence sector. ↗Civil DecommissioningComplete decommissioning of nuclear-related infrastructure and facilities. ↗Advanced Nuclear TechnologyDevelopment of Small Modular Reactors (SMRs) and Advanced Modular Reactors (AMRs). ↗
Frameworks & DPS · 5 from notices
  • Radiometrics & Associated Services - Lot 1 - Installed Radiological Protection InstrumentationSellafield Limited · £33.2m
  • Radiometrics & Associated Services Lot 3 - Radiometrics Characterisation ServicesSellafield Limited · £10.2m
  • Framework for a Radioactive Waste Quality Checking ServiceDEFRA · £1.2m
  • Provision of AmCam Handheld MonitorsSellafield Limited · £728k
  • Engineering Design ServicesUK Atomic Energy Authority · £2k

Extracted automatically from cavendishnuclear.com on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.

Case studies

Delivery stories the supplier has published, with sector and outcome.

⚑ Self-reported
—

No case studies yet

Once a claimed supplier publishes delivery stories — the buyer, the sector, what was delivered and the outcome — they appear here.

Buyer references

Named public-sector contacts who have agreed to act as a reference.

✓ Confirmed by buyer
—

No buyer references yet

Public-sector buyers can confirm they'll act as a reference for this supplier. Confirmed references — with the contract they relate to — show here.

Accreditations & memberships

Independently issued. Verification dates cross-checked against issuer registers.

↔ Cross-checked
—

No accreditations recorded

B-Corp, ISO, Cyber Essentials, Living Wage and similar credentials appear here once added by a claimed supplier and cross-checked against the issuing register.

KPI performance

Delivery, budget and satisfaction scores reported quarterly by buyers.

✓ Verified
84

No verified KPI scores yet

Once buyers report contract KPIs — delivery on time, on budget, satisfaction, adoption and accessibility — a weighted grade and breakdown appear here.

Contracts · 33 live · 46 historic

Pulled from Contracts Finder & Find a Tender. Most recent first.

✓ From notices
TitleBuyerCPVAwardedValueTermStatus
Decommissioning Nuclear Waste Partnership
Sellafield Limited4522000030 Oct 2025£575.0m15 yrsLive
Winfrith Engineering: ILW Management Support
Nuclear Restoration Services (NRS)—01 Aug 2025£500k8 mopending
Project Management Support Services for Shaft & Silo
Nuclear Restoration Services Limited (Dounreay)9839100023 Jun 2025£899k3 yrsLive
P1 - Provision of technical author support
Nuclear Restoration Services Limited (Dounreay)7130000023 Jun 2025£70k6 moClosed
Installed Radiation Protection Instruments (IRPI)
International Nuclear Services Limited5000000001 Apr 2025£112k2 yrsLive
D2160 EC&I Engineer
Nuclear Restoration Services Limited (Dounreay)7130000001 Apr 2025£145k4 yrsLive
Environmental Monitoring and Site Characterisation Lab Services
International Nuclear Services Limited9071150001 Apr 2025£363k12 moClosed
D1208 In-cell Inspections
Nuclear Restoration Services Limited (Dounreay)7163100007 Oct 2024£106k2.9 yrsLive
Box Encapsulation Plant (BEP) Radiometric Equipment
Sellafield Limited3834150017 Sept 2024£254k7 moClosed
ILW Engineering Management Support 24/25
Nuclear Restoration Services (NRS)7131800001 Aug 2024£400k12 moClosed
Total live value £744.2m · mean award £10.6m1–10 of 79

Top buyers · 19 buyers · top 3 = 99%

Share of awarded value. Concentration fires above 40% for any single buyer.

✓ From notices
1
Sellafield Limited
12 contracts
86%
since 2017
2
Dounreay Site Restoration Limited
4 contracts
9%
since 2018
3
CTM Portal for the NDA Shared Services Alliance
21 contracts
4%
since 2020
4
Nuclear Restoration Services (NRS)
11 contracts
0%
since 2022
5
Magnox Limited
4 contracts
0%
since 2023
6
DEFRA
3 contracts
0%
since 2020
7
Nuclear Restoration Services Limited (Dounreay)
4 contracts
0%
since 2024
8
Dounreay, a Divison of Magnox Limited
1 contract
0%
since 2023
9
International Nuclear Services Limited
2 contracts
0%
since 2025
10
LLWR trading as Nuclear Waste Services
1 contract
0%
since 2024

Category mix

CPV-division share of last-12m awarded value.

✓ From notices
Construction work45
13%
Architecture & engineering71
13%
Business services79
13%
Industrial machinery42
13%
Other services98
13%
Other (3)
38%

Geography

Distribution of awarded value by buyer region.

✓ From notices
UK · schematic only
North West40 contracts
90%
Scotland4 contracts
9%
South West4 contracts
0%
London5 contracts
0%
South East7 contracts
0%
Yorkshire1 contract
0%

Peers

Suppliers with overlapping CPVs & buyers (last 24m). CAVENDISH NUCLEAR LIMITED highlighted.

✓ From notices
SupplierSME?Awarded · 24mContracts
CN
CAVENDISH NUCLEAR LIMITED
No£575.5m—
LP
LOVELL PARTNERSHIPS LIMITED
No£140.0m1
JS
John Sisk and Son Ltd
No£67.8m1
KC
Kier Construction
Yes£35.4m2
WD
Willmott Dixon Construction Limited
No£28.1m2
CC
Clegg Construction Limited
No£18.8m2
Compare peers →

Red flags · 0 active

Automated scan of Companies House status, charges and insolvency records.

✓ Verified
✓ Clean. No active risk signals from Companies House status, charges or insolvency records.

Compliance scorecard

Derived from Companies House filings — not a full supplier-assurance check.

↔ Cross-checked
Trading status
Active
Live at Companies House
Annual accounts
Up to date
Last made up to 31 Mar 2025
Confirmation statement
Up to date
Next due 16 May 2027
Outstanding charges
0
No charges registered
Insolvency history
None
No insolvency cases registered
Certifications (ISO, Cyber Essentials, Living Wage, B-Corp, modern-slavery) are supplier self-reported and appear once a claimed profile adds them.

Modifications

Variations to awarded contracts logged under Procurement Act 2023 s.74.

✓ From notices
±

No modifications recorded

No published contract variations for this supplier. Modification notices appear here as they are issued under the Procurement Act 2023.

News mentions

UK trade press & nationals, matched to this supplier.

◰

No news mentions found

We haven't matched any recent UK press coverage to this supplier. Mentions appear here automatically as they're published.

Companies House

Live sync — registered details, directors, PSC and SIC codes.

✓ Live sync

Registered details

Company no.
03975999
Status
Active
Type
Private limited
Incorporated
18 Apr 2000
Reg. office
33 Wigmore Street, London, W1U 1QX
SIC codes
82990
Last accounts
31 Mar 2025
Next accounts due
31 Dec 2026

Directors & PSC

  • MISELL, Neal Gregory — director
    Appointed 15 Apr 2026
  • THOMPSON, Karl Alexander — director
    Appointed 16 Jan 2025
  • ABBOTT, Matthew Thomas — director
    Appointed 15 Nov 2024
  • LAWTON, Mark David — director
    Appointed 20 Nov 2021
  • GORNALL, Michael Robert — director
    Appointed 01 Sept 2021
  • BABCOCK CORPORATE SECRETARIES LIMITED — corporate secretary
    Appointed 25 Feb 2013
  • Babcock Services Group Limited — person with significant control
    ownership of shares 75 to 100 percent · voting rights 75 to 100 percent · right to appoint and remove directors

Financial

Filed accounts from Companies House.

↔ From Cos House
£

No financial filings on record

Turnover, profit and headcount appear here once audited or micro-entity accounts are filed at Companies House.

Org tree

Group structure and ownership.

↔ From Cos House
CAVENDISH NUCLEAR LIMITED
03975999 · this company

Independent. No parent company or subsidiaries recorded at Companies House for this entity.