Brief your market

Who could bid the next time Department for Energy Security & Net Zero tenders for environment & waste — 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.

BSI Standards Limited1 award
Greenhouse Gas Removals (GGR) Standards and Methodologies

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.

Ricardo-AEA Ltd21 awards · 6 buyers · latest Apr 2026
ETAFFFASNational02
AECOM Ltd7 awards · 5 buyers · latest Nov 2025
Ouseburn habitat improvements
UK Centre for Ecology and Hydrology6 awards · 5 buyers · latest Mar 2022
Supply of Pollinator Monitoring
RSK ADAS Limited44 awards · 4 buyers · latest Nov 2023
Provision of the UKs Agricultural Inventory of Ammonia and GHG Emissions 2023 to 2033
APEM Ltd12 awards · 4 buyers · latest Jan 2022
Biodiversity Credits Extended Pilot
Bureau Veritas UK Limited10 awards · 4 buyers · latest Jul 2025
Local Air Quality Management Support 2025 - 2030
BSI Standards Limited6 awards · 4 buyers · latest Nov 2024
Provision of Fast-Tracked Standards, referred to as a Publicly Available Specification ("PAS"), to Assess Safety & Efficacy of Methane Suppressing Feed Products ("MSFPs")
Promar International Ltd20 awards · 3 buyers · latest Sept 2022
FaLMA Lot 2 (Yorkshire & North East) Catchment Sensitive Farming Programme of Advice
Fera Science Ltd8 awards · 3 buyers · latest Oct 2020
AESME Lot 7: Factors for favourable condition of wetland SSSIs in AES
Atkins7 awards · 3 buyers · latest Aug 2021
EcoSF3 Thames Fish Pass Project

Showing 10 of 449.

Ring 3

Proven in the field

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

Biffa Waste Services Ltd378 awards · 78 buyers · latest May 2026
CA17436 - 2023/S 000-018204: Waste Management Services (Sustainable)
Churchill Contract Services Ltd92 awards · 66 buyers · latest Jul 2026
CA17440 - Suffolk New College - Building Cleaning Services
Veolia Es (UK) Limited91 awards · 62 buyers · latest Jul 2026
Offensive Waste & Bulk Collections
Suez Recycling and Recovery Uk Ltd74 awards · 55 buyers · latest Mar 2026
The Collection and Recycling of Non-Domestic Waste
Biffa Waste Services Limited68 awards · 49 buyers · latest Jul 2026
Waste - General
Bulloughs Cleaning Services Ltd64 awards · 47 buyers · latest Sept 2025
Building Cleaning Services
Cleantec Services Limited68 awards · 42 buyers · latest May 2026
CA17390 - CPC/MK/02/2023: Provision of Building Cleaning Services - Mini?Competition for Fairfax Multi Academy Trust
Lewis and Graves Partnership Limited53 awards · 35 buyers · latest Mar 2024
CA13211 - CPC/MK/02/2023: CPC/MK/02/2023: Provision of Building Cleaning Services Framework Agreement
KGB Cleaning South West Ltd42 awards · 32 buyers · latest Feb 2026
CA16751 - Christ the King College Building Cleaning Services Lot 9
Brayborne Facilities Services40 awards · 32 buyers · latest Jan 2026
CA16124 - Mulberry Primary School - Building Cleaning Services

Showing 10 of 6,653.

The full list — for members

All 449 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.