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

Supplier	Awards	Value
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

Awarded	What for	Buyer	Supplier	Value
8 Apr 2025	Specification 1: Provision of Advanced Zoning Project and HNDU Project Delivery (AZP_HNDU…	DESNZ	AECOM LIMITED	£3.2m
16 Jan 2025	con_7360 Heat Network Efficiency Scheme Extension Contract	DESNZ	Gemserv Limited	£3.0m
8 May 2025	Contract Award - Home Energy Model (HEM) Lot 1	DESNZ	Sustenic Limited	£2.7m
13 Apr 2026	AWARDED - Smart Metering Implementation Programme (SMIP) - ICT Technical Architecture and…	DESNZ	AVELLA SECURITY LIMITED	£2.6m
15 Aug 2024	The Provision of Advanced Zoning Project and HNDU Project Delivery (AZP_HNDU Zoning…	DESNZ	AECOM Limited	£2.5m
30 Oct 2025	EV Smart Charging and SSES Professional Services Support	DESNZ	PA CONSULTING SERVICES LIMITED	£2.4m
1 Feb 2024	Heat Networks Zoning Digital Beta	DESNZ	TPXimpact Limited	£2.3m
22 Mar 2023	Interim evaluation of Domestic Energy Affordability Support in Great Britain	DESNZ	IPSOS (MARKET RESEARCH) LTD	£2.2m
26 Apr 2024	BE24052 - Heat Network Technical Assurance Scheme (HNTAS) Shadow Service Provider	DESNZ	Gemserv Limited	£2.1m
6 May 2025	Contract Award Notice - Home Energy Model (HEM) Lot 4	DESNZ	Building Research Establishment Limited	£2.1m
23 Aug 2024	AZP & HNDU Zoning Support	DESNZ	WSP UK LIMITED	£2.0m
25 Mar 2026	Awarded Contract: Provision of Regulatory Design Services to the Smart Metering…	DESNZ	Yellow Wood Energy Consulting Ltd	£1.9m
30 Apr 2026	AWARDED CONTRACT NOTICE: SMIP ICT Testing and Migration Services	DESNZ	METHODS BUSINESS AND DIGITAL TECHNOLOGY…	£1.9m
3 May 2025	Fuel Finder Services	DESNZ	VE3 Global Ltd	£1.9m
7 Aug 2024	PS24030 - Energy and Net Zero Behavioural Science Framework RAF067.2324 - RFP	DESNZ	Behavioural Insights Ltd +3	£1.8m
22 Aug 2024	THE PROVISION OF ADVANCED ZONING PROJECT AND HNDU PROJECT DELIVERY (AZP_HNDU Zoning…	DESNZ	OVE ARUP & PARTNERS LIMITED	£1.8m
30 Dec 2024	Energy Retail Markets Legal Advice and Services	DESNZ	Sharpe Pritchard LLP +1	£1.8m
8 Apr 2025	Specification 1: Provision of Advanced Zoning Project and HNDU Project Delivery (AZP_HNDU…	DESNZ	ARUP GROUP LIMITED	£1.7m
1 Dec 2024	HNZP support and AZP projects	DESNZ	AECOM Limited	£1.5m
1 Apr 2026	CSP25292 - Emergency Response, Capabilities and Operations (ERCO) Training and Exercising…	DESNZ	JOLTS Consulting Limited	£1.5m
25 Jun 2025	Provision of Professional Services for GBE Investments	DESNZ	Deloitte LLP	£1.5m
13 Mar 2026	Evaluation for GIGa HALEU Programme	DESNZ	RSK Environment +2	£1.4m
13 Mar 2026	Evaluation for HALEU Programme	DESNZ	RSK Environment	£1.4m
13 Mar 2026	Evaluation for HALEU Programme	DESNZ	RSK Environment	£1.4m
8 Jul 2024	Fuel Poverty Modelling	DESNZ	Building Research Establishment Limited	£1.3m

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.