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ACE

UK PUBLIC-SECTOR SUPPLIER

Companies House 01120437 · United Kingdom

AMENTUM CLEAN ENERGY LIMITED

AMENTUM CLEAN ENERGY LIMITED is a supplier to UK public-sector buyers. This profile aggregates its public-record contract wins — who it sells to, what it supplies, latest awards and activity over time.

Data period: 2023-06-20 to 2026-06-20Updated 2026-06-20

34

Contracts won

14

Public buyers

14

Categories

2024

Active since

According to ENKII, AMENTUM CLEAN ENERGY LIMITED has won 34 UK public-sector contracts from 14 public buyers across 14 procurement categories between 2023-06-20 and 2026-06-20, most recently working with Great British Energy - Nuclear.

Public-sector buyers

Who AMENTUM CLEAN ENERGY LIMITED supplies

The UK public bodies AMENTUM CLEAN ENERGY LIMITED has won the most contracts from.

BuyerContracts won
Great British Energy - Nuclear2
UNITED KINGDOM ATOMIC ENERGY AUTHORITY1
Sellafield Limited2
Sellafield Ltd5
Nuclear Waste Services7
Nuclear Restoration Services Limited (Dounreay)2
nuclear decommissioning Authority7
Ministry of Defence1
NRS Dounreay1
Sellafield1
NUCLEAR RESTORATION SERVICES1
Nuclear Restoration Services Ltd2
Nuclear Restoration Services Limited1
Nuclear Waste Services Limited1

What they supply

AMENTUM CLEAN ENERGY LIMITED's public-sector categories

Common Procurement Vocabulary (CPV) breakdown of contracts won over the reporting period.

71310000

71310000
14 contracts won

71330000

71330000
1 contract won

72220000

72220000
1 contract won

73110000

73110000
5 contracts won

71530000

71530000
1 contract won

45210000

45210000
1 contract won

98110000

98110000
1 contract won

45250000

45250000
2 contracts won

45110000

45110000
1 contract won

71350000

71350000
3 contracts won

79410000

79410000
1 contract won

90710000

90710000
1 contract won

45220000

45220000
1 contract won

71630000

71630000
1 contract won

Recent contracts

Latest contracts won by AMENTUM CLEAN ENERGY LIMITED

The most recently published award notices on Find a Tender and Contracts Finder.

CSSF-002 - GDF Criticality Safety Methodology and Assessments

Nuclear Waste Services · 2026-06-18

£80K

CSSF-001 - Support to international post closure criticality safety projects.

Nuclear Waste Services · 2026-06-18

£60K

DNWP0053/LOT1A/CALDER F199 Demolition

Sellafield Ltd · 2026-05-18

£153K

Owner's Engineer

Great British Energy - Nuclear · 2026-04-30

£300.0M

UKRI-5155 Radioactive Waste Characterisation and Treatment Services

Framework / DPS

UK Research & Innovation (UKRI) · 2026-04-24

Framework value not attributable

DNWP0058/LOT1A/CALDER WELFARE FACILITIES

Sellafield Ltd · 2026-04-14

£484K

DNWP0011/LOT1A/ CALDER R1 Discharge Bay Service Disconnections

Sellafield Ltd · 2026-04-14

£126K

DNWP0062/LOT1A/ID - Hazard Reduction

Sellafield Ltd · 2026-04-01

£1.9M

JDR Management Support Framework.

Framework / DPS

UK Atomic Energy Authority · 2026-03-27

Framework value not attributable

DNWP0056/LOT1A/ Quaternary Borehole Restoration

Sellafield · 2026-03-26

£81K

ATO19 D2001 LC15 Peer Review

Nuclear Restoration Services Limited (Dounreay) · 2026-03-24

£171K

Radiological Testing of Nuclear Standard Elastomer to Ensure Continued

nuclear decommissioning Authority · 2026-02-23

(06 - EDW&MR) DC25-15

nuclear decommissioning Authority · 2026-02-23

£284K

UKRI-5155 Radioactive Waste Characterisation and Treatment Services

Framework / DPS

UK Research & Innovation (UKRI) · 2026-02-20

Framework value not attributable

GK25-12

nuclear decommissioning Authority · 2026-02-20

£100K

Deterministic Fire Risk Assessment (DFRA) Peer Review

Nuclear Restoration Services Limited · 2026-02-19

DNWP Framework Digital Client Lead

Framework / DPS

Sellafield Ltd · 2026-02-17

Framework value not attributable

DNWP0059/LOT1A/Principal Designer Services

Sellafield Ltd · 2026-02-17

£500K

Owner's Engineer

Great British Energy - Nuclear · 2026-02-09

£300.0M

(05 - SF&NM) GK25-13

nuclear decommissioning Authority · 2026-01-28

£100K

IS THIS YOUR COMPANY?

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Activity over time

AMENTUM CLEAN ENERGY LIMITED's public-sector activity by year

Contracts won per year, by published award date.

YearContracts won
202616
202517
20241

Frequently asked

Common questions about AMENTUM CLEAN ENERGY LIMITED

How many public-sector contracts has AMENTUM CLEAN ENERGY LIMITED won?

AMENTUM CLEAN ENERGY LIMITED has won 34 contracts from 14 UK public-sector buyers between 2023-06-20 and 2026-06-20, across 14 procurement categories.

Which public bodies does AMENTUM CLEAN ENERGY LIMITED supply?

AMENTUM CLEAN ENERGY LIMITED's largest public-sector buyers by award value are Great British Energy - Nuclear, UNITED KINGDOM ATOMIC ENERGY AUTHORITY, Sellafield Limited. It has worked with 14 public buyers in total.

What does AMENTUM CLEAN ENERGY LIMITED supply to the public sector?

AMENTUM CLEAN ENERGY LIMITED's public-sector work is concentrated in 71310000, 71330000, 72220000. See the full CPV category breakdown below.

Is AMENTUM CLEAN ENERGY LIMITED a competitor for contracts my business wants?

If you bid for similar work, AMENTUM CLEAN ENERGY LIMITED may be an incumbent you're competing against. ENKII scores your business against live tenders, shows the incumbents on each one, and identifies the certifications you need to compete. Free Readiness Score in 3 minutes.

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Related ENKII resources

Sources & methodology

How this profile is compiled

Analysed by ENKII · Updated 2026-06-20

This profile aggregates public-record award data published by the UK Government under the Open Government Licence v3.0. ENKII fetches, deduplicates, and resolves supplier identities (this profile is matched at high confidence); we don't edit the underlying facts.

Source portals

  • · Find a Tender (find-tender.service.gov.uk)
  • · Contracts Finder
  • · Spend Network
Full methodology — calculations, refresh cadence & caveats

This profile reproduces public-record award data published by UK government buyers; ENKII aggregates but does not alter the underlying facts. Source records remain subject to Open Government Licence v3.0 attribution. ENKII doesn't warrant accuracy beyond the source portals' own publication.

Spotted an error, or want this profile corrected or removed? Contact hello@enkii.io and we'll review it promptly.

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