System operational · UK tenders
Awarded
ocds-h6vhtk-079203 · award

DESNZ UKNNL Framework

Department for Energy Security & Net Zero

Estimated Value

Up to £180,000,000

Deadline

Not specified

Published

28 October 2026

Type

Not specified

LondonGBdirect

At a glance

Estimated value
£180,000,000
Published
28 October 2026
Location
London
Type
direct procedure
Contract ends
31 December 2034 (expect a re-tender before then)
Likely incumbent
Energy Systems Catapult, current contract ends May 2029
Published on
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Full Description

Background

The Department for Energy Security and Net Zero (“DESNZ”) owns HM Government’s mission to make the UK a clean energy superpower by achieving clean power by 2030 and Net Zero by 2050. Nuclear Power is intended to play a critical role in achieving this mission through the provision of low carbon, baseload energy generation to a renewables-led power system in the UK. The UK is also a UN Permanent Five (P5) Nuclear Nation, which entails both domestic and international responsibilities for which DESNZ is the lead Department in delivering.

It is therefore critical that DESNZ is able to

  • Make effective, informed policy decisions
  • Deliver an effective regulatory regime which supports the delivery of effective, safe and safeguarded nuclear energy generation in the UK and abroad;
  • Collaborate with partners both international and domestic to ensure the UK promotes world-leading practices in the sector, supports effective international collaboration on nuclear matters and discharges its obligations as a nuclear state; and
  • Work with the nuclear sector to enable the development of novel, innovative technologies.

Based on historic workload and future pipeline, there will be occasions where DESNZ does not have the specialist knowledge or capability in-house to deliver these responsibilities and will require highly specialist third party to enable the achievements of its objectives.

Overarching Framework Requirements

DESNZ requires support across three service lines which collectively constitute the scope of this framework:

  • Research and Development
  • Technical Managed Services – services critical to the functioning of the nuclear sector and/or DESNZ’s role; and
  • Specialist Advisory Services – deep scientific, technical and/or engineering insight into complex matters in the nuclear sector for which DESNZ does not have the requisite capability, experience or insight.

The application of VAT will be determined on a per-call off basis.

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Award Details

United Kingdom National Nuclear Laboratory

1 Jan 2027 – 31 Dec 2034

£180,000,000

Recent awards by Department for Energy Security & Net Zero

Likely incumbents

Suppliers who won similar work from this buyer in the last 5 years.

5 found
  1. 1

    Energy Systems Catapult

    4 contracts wonlatest 4 Aug 2026ends 31 May 2029CH 08705784

    £621,302

    total awarded

  2. 2

    BSI Standards Ltd

    3 contracts wonlatest 27 Oct 2026ends 25 Aug 2028CH 07864997

    £657,837

    total awarded

  3. 3

    TURNER & TOWNSEND PROJECT MANAGEMENT LIMITED

    2 contracts wonlatest 3 Nov 2026ends 29 Mar 2030

    £4m

    total awarded

  4. 4

    YRD İstanbul Reklamcılık ve Danışmanlık Ticaret Anonim Şirketi

    2 contracts wonlatest 6 Oct 2026ends 20 Nov 2026

    £845,026

    total awarded

  5. 5

    Version 1 Solutions Ltd

    2 contracts wonlatest 19 Aug 2026ends 31 Aug 2029

    £100m

    total awarded

Energy Systems Catapult is the most likely incumbent based on recency and category match. To win, bidders typically need a clearly differentiated proposition or a price advantage.

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Buyer Profile

Department for Energy Security & Net Zero
Typepublic body
RegionUKI32
Total tenders128
Total spend£645,596,599
View buyer profile

Key Dates

Published

28 October 2026

Submission deadline

Not specified

Notice type

award

Source

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Contains public sector information licensed under the Open Government Licence v3.0.

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