Buyer profile
DESNZ & DSIT Group Commercial
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Total contracts
38
Known spend
£407m
35 disclosed
Average value
£12m
Per contract
Active suppliers
10
Last 5 years
Top suppliers
Last 5 years- 1
Deloitte LLP
2 winslatest 30 Jun 2025£266m
- 2
Turner and Townsend Consulting Ltd
2 winslatest 02 Jun 2025£51m
- 3
Prolific Research USA Inc
2 winslatest 18 Sept 2025£6m
- 4
Accenture (UK) Limited
1 winlatest 26 Feb 2025£250m
- 5
Arcadis Consulting (UK) Limited
1 winlatest 26 Feb 2025£250m
- 6
Costain Limited
1 winlatest 26 Feb 2025£250m
- 7
Gleeds Energy Ltd
1 winlatest 26 Feb 2025£250m
- 8
Jacobs U.K. Limited
1 winlatest 26 Feb 2025£250m
- 9
Mott MacDonald Limited
1 winlatest 26 Feb 2025£250m
- 10
Ove Arup and Partners Limited
1 winlatest 26 Feb 2025£250m
What they buy
By CPV categoryR&D servicesCPV 73
12 contracts · £35m
Architectural & engineeringCPV 71
11 contracts · £313m
IT servicesCPV 72
5 contracts · £14m
Business servicesCPV 79
4 contracts · £166,440
Financial & insuranceCPV 66
2 contracts · £16m
Community & personal servicesCPV 98
1 contract · £14m
Public administrationCPV 75
1 contract · £13m
Postal & telecomsCPV 64
1 contract · £1m
Tender activity
Notices published per month — last 24 months
All contracts (38)
Auditors for the renewables obligation (RO) cost to exchequer
This contract is for independent auditors to check that the government‑funded Renewable Obligation cost reductions are correctly applied by energy suppliers and passed on to consumers.
Independent evaluation and learning partner for the NDC support programme
The UK government is looking for an independent partner to evaluate its NDC Support Programme over a three‑year period (Aug 2026‑Mar 2029). The partner will deliver two learning reports and a full programme evaluation, with an optional two‑year extension for a final report in 2031.
Research participant incentive vouchers
For the provision of vouchers for research participant The procurement is for a voucher scheme to for participants taking part in research projects.
98840
Legal Advice Legal Services / Advice with relationship to subsea cabling repair capability
Mendix platform hosting licences for 2 years
Mendix Platform hosting licences for 2 years
Sightline subscription for market intelligence on energy projects
Sightline is an annual subscription to a platform which provides real-time market intelligence on energy projects and deals. Sightline provide a unique and extensive live database
Panel of technical experts - electricity market reform
The Panel of Technical Experts (PTE) is an independent advisory group, members of which are appointed by government to advise on technical aspects of Electricity Market Reform. The
Fuel poverty modelling
The delivery of annual fuel poverty data modelling. DESNZ use this data modelling to produce DESNZ’s accredited official statistics on fuel poverty.
Review of value of partnering with the gfi’s transition finance lab
HMG’s Financial Services and Growth Strategy specifically flagged that DESNZ would work proactively with the Green Finance Institute and others to “explore innovative financial str
RM6181 - contract award - consumer advise and information phoneline
To deliver the next phase of the Consumer Advice and Information (CAI) Phoneline service from March 2026. The service will provide impartial, expert energy advice and assisted digi
Reformed national pricing (RNP) codes and licences
External energy related consultancy services The Review of Electricity Market Arrangements (REMA) was launched in 2022 to ensure that Great Britain’s electricity markets are fit fo
Justification
Commissioned Review of AISI’s Risk Assessment Methodologies
Justification
Open Tender for An individual who is respected and knowledgeable about ETSI to act as the convener of UK work in ETSI formal meetings. This is supported by engagement with UK stake
Management of the nuclear safeguards programme
The contract provides management services for the UK’s Nuclear Safeguards Programme (NSP) to Department for Energy Security and Net Zero (DESNZ) and International Atomic Energy Age
5000000
AISI requires a Supplier to provide study participants and platform access for ~20 human uplift studies and 20-40 human impacts studies. The Supplier should provide recruitment and
30000
Research exploring children’s views on the future, delivered through British Science Week. It includes designing engagement materials, analysing ~4,000 submissions and providing se
26800.00
To support the development of the Government Science Engineering (GSE) Reward Framework, Go-Science requires accurate salary benchmarking data to compare government S&E roles with
67,472.48 (Ex VAT)
To enable widespread AI adoption, DSIT is responding to the AI Management Essentials public consultation by developing two pieces of guidance to be published in September as part o
Smart metering engineering services
The requirement is for services relating to engineering, technical design, signal propagation and protocol specification for smart metering-related devices. The service provider de
AISI research and evals partner for cyber and autonomous capabilities of AI foundation models
The Artificial Intelligence Security Institute (AISI) is a directorate within the Department of Science and Innovation Technology mission (DSIT). Its mission is to minimise the sur