RFP QuestBeta

Brief your market

Who could bid the next time Department for Energy Security & Net Zero tenders for it services — from published contract awards, not directories. A tender that reaches more proven suppliers gets more bids; more bids is the evidence of value for money.

Research & Development (34)Business Services (13)IT Services (9)Government & Public Administration (9)Financial & Insurance Services (5)Engineering & Architecture (5)Postal & Telecommunications (2)Environment & Waste (1)

Ring 1

Proven with you

Suppliers already holding a published Department for Energy Security & Net Zero award in this category.

  • Astraeus Consulting Limited1 award · latest May 2024

    IDET DDaT Professional Servies

  • Capgemini UK Plc1 award · latest May 2024

    IDET Service Design and Assurance Professional Services

  • Triad Group plc1 award · latest Apr 2024

    IDET DDaT Professional Servies

  • Eurocontrol1 award · latest Mar 2024

    Prj_3016 EMIS Data and Services

  • MHR INTERNATIONAL UK LIMITED1 award · latest Feb 2024

    Great British Nuclear HR System with Fully Managed Payroll

  • Aether Limited1 award

    Digital Upgrade of the UK’s National Atmospheric Emissions Inventory System Contract Modification

  • KPMG LLP1 award

    Digital Upgrade of the UK’s National Atmospheric Emissions Inventory System Contract Modification

  • Mott Macdonald1 award

    Digital Upgrade of the UK’s National Atmospheric Emissions Inventory System Contract Modification

  • Enerdata SAS1 award

    The Global Carbon Finance Model (GLOCAF)

Ring 2

Proven with buyers like you

Suppliers who have won this category with other Central Gov buyers — ranked by how many different buyers they've won with. This is the shortlist that widens your field.

  • Capgemini uk plc156 awards · 22 buyers · latest May 2026

    GDaD RBT Specialists Resources

  • Deloitte LLP131 awards · 19 buyers · latest Jul 2026

    Criminal Justice Data Spine Delivery

  • IBM United kingdom limited44 awards · 17 buyers · latest Dec 2025

    Border Force Central Operations Platform (COP) II- Run and Sustain.

  • Softcat plc48 awards · 16 buyers · latest May 2026

    Reporting and Offender Management (ROM) Immigration Bail Biometric Self-Service Reporting Contract Award

  • Kpmg Llp39 awards · 16 buyers · latest Mar 2026

    Cyber Incident Response Partner

  • Microsoft Limited33 awards · 16 buyers · latest Jul 2026

    Supply Of Microsoft Unified Support

  • CGI IT UK Limited26 awards · 15 buyers · latest Jul 2026

    Strategic Data Partner

  • Kainos Software Limited45 awards · 14 buyers · latest Jun 2026

    Application Development, Maintenance and Support (ADMS) Plus - Kainos

  • Accenture (UK) Limited37 awards · 14 buyers · latest Jan 2026

    IBCA Analytics & Data Science

  • Cognizant Worldwide Limited31 awards · 14 buyers · latest Jul 2026

    Quality Assurance Testing (QAT) services

Showing 10 of 3,177.

Ring 3

Proven in the field

Suppliers winning this category anywhere in UK public procurement (excluding those already listed above).

Showing 10 of 13,190.

The full list — for members

All 3,177 Central Gov suppliers in ring 2 (capped at 400, widest-proven first), copyable as a spreadsheet — so every proven supplier can hear about your next tender, not just the usual three.

Sources: published UK contract award notices in the rfp.quest corpus. “Proven” means a citable award — nothing here is inferred or scraped from directories. Award values are not summed because framework ceilings would inflate them.