Supplier · Large organisation

Amentum Clean Energy Ltd

Amentum Clean Energy Ltd has won 65 UK public contracts worth £5.71bn since 1 Apr 2024. See its competitors in architecture & engineering.

Company 01120437Companies House recordBased in North WestFirst contract 1 Apr 2024Latest contract 14 Sep 2026

Also published as Jacobs Clean Energy Limited (formerly Wood Nuclear Limited). These are the same company (01120437), so their contracts are counted together.

Contracts
65
Published value
£5.71bnwhere stated
Without competition
6%4 contracts
Won by SMEs
9%of 32 with size known
Contracts won per month, last 24 months 63 contracts · busiest month September 2025

Biggest customers

  1. Nuclear Waste Services 17 contracts · £42.7m
  2. Sellafield Ltd 16 contracts · £5.63bn
  3. Nuclear Decommissioning Authority 7 contracts · £990k
  4. UK Atomic Energy Authority 4 contracts · £13.5m
  5. Nuclear Restoration Services 3 contracts · £347k
  6. NRS Dounreay 2 contracts · £180k
  7. Ministry of Defence 1 contract · £533k

What they supply

  1. Architecture & engineering 19 contracts · £51.3m
  2. Research & development 15 contracts · £8.06m
  3. Waste, cleaning & environmental 10 contracts · £35.3m
  4. Community & personal services 7 contracts · £3.23m
  5. Business services 5 contracts · £207k
  6. Construction work 3 contracts · £5.6bn
  7. IT services 2 contracts · £893k
  8. Education & training 1 contract · £30,791

Competitors in architecture & engineering

Sector overview
  1. WSP UK Limited 207 contracts · £1.74bn
  2. Aecom Limited 190 contracts · £2.43bn
  3. Ridge and Partners LLP 184 contracts · £2.11bn
  4. Atkinsrealis UK Limited 157 contracts · £1.55bn
  5. Ove Arup & Partners Limited 131 contracts · £1.61bn
  6. Arcadis Consulting (UK) Ltd 119 contracts · £1.29bn

These are the suppliers with the most architecture & engineering contracts in the last two years, which is where Amentum Clean Energy Ltd wins most of its work. They are not necessarily bidding for the same contracts. See the whole sector.

All contracts won by Amentum Clean Energy Ltd

Contracts won by Amentum Clean Energy Ltd
Date Contract Buyer Value
14 Sep 2026 Nuclear Restoration Services Limited (Dounreay) £3.05m
14 Sep 2026 Sellafield Ltd £479k
9 Sep 2026 Sellafield Ltd £3.43m
8 Sep 2026 Sellafield Ltd £4.08m
16 Jul 2026 Nuclear Decommissioning Authority £360k
14 Jul 2026 Nuclear Restoration Services £275k
23 Jun 2026 Sellafield Ltd £185k
3 Jun 2026 Nuclear Waste Services £20,000
1 Jun 2026 Sellafield Ltd £4.5m
1 Jun 2026 Sellafield Ltd £4.5m
1 Jun 2026 Sellafield Ltd £9.92m
20 May 2026 Nuclear Waste Services £40,000
19 May 2026 NRS Dounreay £93,798
1 May 2026 Nuclear Waste Services £1.3m
1 May 2026 Sellafield Ltd £153k
23 Apr 2026 Defence Infrastructure Organisation £4.5m
21 Apr 2026 Nuclear Waste Services —
21 Apr 2026 Nuclear Waste Services £14.5m
14 Apr 2026 Sellafield Ltd £484k
8 Apr 2026 Sellafield Ltd £126k
31 Mar 2026 Sellafield Ltd £1.74m
26 Mar 2026 Sellafield Ltd £80,736
24 Mar 2026 Nuclear Restoration Services Limited (Dounreay) £171k
23 Feb 2026 Nuclear Decommissioning Authority —
18 Feb 2026 Nuclear Restoration Services —
17 Feb 2026 Sellafield Ltd £500k
27 Jan 2026 Nuclear Decommissioning Authority £94,689
26 Jan 2026 Nuclear Decommissioning Authority £284k
6 Jan 2026 Sellafield Ltd £95,000
16 Dec 2025 UK Atomic Energy Authority £195k
4 Dec 2025 Nuclear Decommissioning Authority £104k
30 Oct 2025 Sellafield Ltd £1bn
30 Oct 2025 Sellafield Ltd £4.6bn
21 Oct 2025 Nuclear Waste Services —
21 Oct 2025 Nuclear Waste Services —
17 Oct 2025 NRS Dounreay £85,878
17 Oct 2025 Nuclear Decommissioning Authority £89,194
29 Sep 2025 UK Atomic Energy Authority £3.08m
12 Sep 2025 Nuclear Waste Services £26m
9 Sep 2025 Nuclear Waste Services —
9 Sep 2025 Nuclear Waste Services —
9 Sep 2025 Nuclear Waste Services —
9 Sep 2025 Nuclear Waste Services —
2 Sep 2025 Department of Environment, Food and Rural Affairs £30,791
28 Aug 2025 Nuclear Decommissioning Authority £57,554
24 Jul 2025 Nuclear Waste Services —
15 Jul 2025 Nuclear Restoration Services Limited (Dounreay) £160k
3 Jul 2025 UK Atomic Energy Authority £360k
24 Jun 2025 Nuclear Waste Services £261k
19 Jun 2025 Nuclear Restoration Services Limited (Dounreay) £112k

Contracts are matched to this supplier by company name as published in each notice. If a company appears under slightly different names, some of its contracts may be listed separately. How matching works.