DESNZ

Public body — contracts awarded

£778.5mTotal value£778,513,165 across every award on file
304Awardspublished since 4 July 2024

Who they buy from

SupplierAwardsValue
Ricardo AEA Limited 8 £325.2m
WSP UK LTD 11 £306.6m
AECOM Limited 12 £301.2m
City Science Corporation Limited 6 £294.6m
Ramboll UK Limited 5 £293.6m
Buro Happold Ltd 7 £293.0m
Fair Heat Limited 4 £292.9m
Frazer-Nash Consultancy Limited 6 £292.7m
Sustainable Energy Limited 4 £292.3m
Greenfield Nordic Ltd 4 £292.3m

Every award on file

AwardedWhat forBuyerSupplierValue
14 Apr 2025 Contract Award Notice - Home Energy Model - Lot 3 DESNZ City Science Corporation £1.2m
3 Jun 2025 Contract Award - Home Energy Model (HEM) - Lot 5 DESNZ Etude £1.2m
20 Aug 2024 AZP & HNDU Zoning Support DESNZ Ramboll UK Limited £1.2m
10 Jun 2025 External Financial Advisory Support for Existing Nuclear Projects DESNZ PA Consulting Group Limited £1.0m
16 Feb 2026 PS25193 - Electrification of Heat Programme Evaluation DESNZ ICF Consulting Services Ltd £999k
21 Jun 2023 Digital Modus Saas Solution- Implementation Services PartnerLondon DESNZ Digital Modus Ltd £990k
29 Jul 2024 COP 29 UK Pavilion and Office Space DESNZ Orientations Events LLC £985k
14 Jan 2025 BE24194 - Smart Metering Programme Evaluation (IPE) DESNZ Verian Group UK Ltd £879k
21 Mar 2023 PS22234 BUS (Boiler Upgrade Scheme) Evaluation Report DESNZ ICF Consulting Services Ltd £844k
9 Dec 2024 National Atmospheric Emissions Inventory (NAEI) 2025: Lot 2 DESNZ The Public Service Consultants Ltd £830k
23 Apr 2025 Contract Award Notice DESNZ City Science Corporation £807k
8 Jun 2026 ICF Legal Services Contract Award Notice DESNZ TLT LLP £800k
11 May 2026 PS26016 - The Provision of Third Party Inspections DESNZ Actica Consulting Limited £800k
25 Sep 2023 PS23213 - Energy Efficiency & Net Zero Longitudinal Survey RAF016/2324 DESNZ I.F.F RESEARCH LIMITED £797k
17 Jul 2023 PS23107 - Interim Evaluation of Domestic Energy Affordability Support in Northern Ireland DESNZ IPSOS (MARKET RESEARCH) LTD £790k
4 Jun 2025 BE25011 - Evaluating greenhouse gas removal programmes and Cross-Programme Evaluation of… DESNZ Technopolis Limited £786k
17 Nov 2025 con_8954 - HNTAS Interim Technical Support DESNZ Fair Heat Limited £781k
22 Oct 2025 PS25146 - Evaluation of the Warm Homes Local Grant (WHLG) DESNZ RSM UK Consulting LLP £706k
5 Aug 2024 BE24146 - Model Management and Data Analytics DESNZ AECOM Limited £697k
10 Feb 2025 BE24203 - Evaluation of the Warm Homes: Social Housing Fund - Wave 3 DESNZ I.F.F Research Ltd £657k
18 Nov 2024 CON_7063 National Zoning Model - Primary Model Development DESNZ Environmental Resources Management… £641k
10 Jul 2026 Evaluation of Electricity Transmission Network Infrastructure Bill Discount Scheme and… DESNZ Verian Group UK Ltd £614k
3 Jun 2025 External Technical Advisory Support for Existing Nuclear Projects DESNZ Ove Arup & Partners Limited £600k
17 May 2024 PS24060 The costs of decarbonising complex-to-decarbonise homes DESNZ Energy Saving Trust Enterprises Limited £598k
23 May 2025 CON_7925 National Zoning Model Management and Data Analytics DESNZ OVE ARUP & PARTNERS LIMITED £500k

Organisations are grouped by name, because the notices carry no identifier that appears on all of them. A body that publishes under two spellings will appear twice; two different companies with the same trading name will appear as one. Check the individual notices before drawing a conclusion.