| Environment AgencyNew | Other | 16 | £214m | 86.7% | 2026-05-05 |
| NHS Commercial SolutionsNew | Other | 1 | £14m | 5.6% | 2024-09-01 |
| DEFRA | Other | 49 | £7m | 2.7% | 2022-12-07 |
| East Riding of Yorkshire CouncilNew | Other | 2 | £4m | 1.4% | 2025-01-08 |
| Sheffield City Council | Other | 1 | £2m | 0.8% | 2018-11-06 |
| East Riding of Yorkshire | Other | 1 | £1m | 0.4% | 2018-11-07 |
| Staffordshire County Council | Other | 1 | £511k | 0.2% | 2023-04-03 |
| Mining Remediation AuthorityNew | Other | 2 | £511k | 0.2% | 2025-11-12 |
| ICS on behalf of DSIT and DESNZ | Other | 1 | £462k | 0.2% | 2024-04-01 |
| Business Energy and Industrial Strategy | Other | 1 | £414k | 0.2% | 2020-08-20 |
| West Northamptonshire Council | Other | 5 | £407k | 0.2% | 2025-01-15 |
| Surrey County CouncilNew | Other | 4 | £327k | 0.1% | 2025-10-10 |
| Department for Business, Energy & Industrial Strategy | Other | 2 | £324k | 0.1% | 2023-05-19 |
| Natural England | Other | 7 | £272k | 0.1% | 2024-09-11 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 3 | £231k | 0.1% | 2020-04-28 |
| Department for Environment Food & Rural Affairs | Other | 3 | £228k | 0.1% | 2024-10-30 |
| Tees Valley Combined Authority | Other | 1 | £175k | 0.1% | 2023-12-09 |
| Forestry Commission | Other | 3 | £150k | 0.1% | 2022-07-26 |
| Rother District Council | Other | 2 | £139k | 0.1% | 2026-04-28 |
| Forestry England for and on behalf of the Forestry Commission | Other | 1 | £120k | 0.0% | 2023-10-04 |
| Torbay Council | Other | 2 | £112k | 0.0% | 2023-10-17 |
| The Crown Estate | Other | 2 | £101k | 0.0% | 2024-08-22 |
| Norse Commercial Services LtdNew | Other | 1 | £97k | 0.0% | 2025-05-16 |
| Historic England | Other | 4 | £89k | 0.0% | 2024-12-10 |
| Scarborough Borough Council | Other | 1 | £88k | 0.0% | 2021-06-09 |
| Committee on Climate Change | Other | 1 | £70k | 0.0% | 2022-12-21 |
| Leeds City CouncilNew | Other | 1 | £68k | 0.0% | 2026-03-23 |
| Milton Keynes Council | Other | 1 | £62k | 0.0% | 2022-07-07 |
| North East Lincolnshire Council | Other | 1 | £55k | 0.0% | 2022-12-14 |
| Birmingham City Council | Other | 1 | £53k | 0.0% | 2022-06-16 |
| Exeter City Council | Other | 1 | £50k | 0.0% | 2024-01-26 |
| Somerset County Council | Other | 1 | £50k | 0.0% | 2019-04-23 |
| South Downs National Park Authority | Other | 2 | £47k | 0.0% | 2023-08-31 |
| North West Leicestershire District Council | Other | 1 | £47k | 0.0% | 2017-04-10 |
| JNCC SUPPORT CO | Other | 1 | £41k | 0.0% | 2018-11-15 |
| Breckland District Council | Other | 1 | £40k | 0.0% | 2023-10-30 |
| Malvern Hills District Council | Other | 1 | £37k | 0.0% | 2018-10-12 |
| Office for Environmental ProtectionNew | Other | 4 | £36k | 0.0% | 2025-01-15 |
| Wyre Forest District Council | Other | 1 | £35k | 0.0% | 2016-04-04 |
| Nottinghamshire County CouncilNew | Other | 1 | £33k | 0.0% | 2025-10-01 |
| Hull City Council | Other | 1 | £32k | 0.0% | 2023-05-19 |
| Worthing Borough CouncilNew | Other | 1 | £32k | 0.0% | 2025-01-27 |
| Gateshead Council | Other | 1 | £30k | 0.0% | 2022-09-01 |
| Nuneaton & Bedworth BC (NUN) | Other | 1 | £30k | 0.0% | 2022-07-29 |
| Southend-on-Sea City CouncilNew | Other | 1 | £30k | 0.0% | 2026-01-12 |
| Telford & Wrekin Council | Other | 2 | £25k | 0.0% | 2021-04-13 |
| City of Bradford Metropolitan District Council | Other | 1 | £24k | 0.0% | 2023-05-04 |
| Southampton City Council | Other | 1 | £22k | 0.0% | 2017-08-24 |
| Chelmsford City Council | Other | 1 | £20k | 0.0% | 2022-05-26 |
| NHS England | Other | 1 | £19k | 0.0% | 2022-03-03 |
| Wyre Council | Other | 1 | £17k | 0.0% | 2023-08-31 |
| Norfolk County Council | Other | 1 | £15k | 0.0% | 2022-12-13 |
| Dartford Borough Council | Other | 1 | £14k | 0.0% | 2020-04-14 |
| WESTCOUNTRY RIVERS TRUST | Other | 1 | £13k | 0.0% | 2018-04-11 |
| North York Moors National Park Authority | Other | 1 | £12k | 0.0% | 2022-06-15 |
| Hampshire County CouncilNew | Other | 2 | £0k | 0.0% | 2026-03-24 |
| Central Bedfordshire Council | Other | 3 | £0k | 0.0% | 2026-01-20 |
| ADDLESHAW GODDARD LLP | Other | 1 | £0k | 0.0% | 2015-11-17 |
| North Lincolnshire Council | Other | 1 | £0k | 0.0% | |
| Cotswold District Council | Other | 1 | £0k | 0.0% | |
| Welwyn Hatfield Borough Council | Other | 1 | £0k | 0.0% | |
| New Forest District Council | Other | 1 | £0k | 0.0% | |
| Surrey and Borders Partnership NHS Foundation Trust on behalf of NHS Commercial Solutions | Other | 1 | £0k | 0.0% | |
| Natural Resources Wales | Other | 3 | £0k | 0.0% | |
| Scottish Environment Protection Agency (SEPA) | Other | 1 | £0k | 0.0% | |
| The Association of North East Councils Limited | Other | 1 | £0k | 0.0% | |
| East Hertfordshire District Council | Other | 1 | £0k | 0.0% | |
| Devon County Council | Other | 2 | £0k | 0.0% | |
| The Council of the Borough of Kirklees | Other | 1 | £0k | 0.0% | |
| Basingstoke and Deane Borough Council | Other | 1 | £0k | 0.0% | |
| Scottish Natural Heritage | Other | 1 | £0k | 0.0% | |
| North Hertfordshire District Council | Other | 1 | £0k | 0.0% | |
| Espo | Other | 2 | £0k | 0.0% | |
| ENVIRONMENT AGENCY (Defra Network eTendering Portal) | Other | 4 | £0k | 0.0% | |
| The Coal Authority | Other | 1 | £0k | 0.0% | |
| Cornwall Council | Other | 1 | £0k | 0.0% | |
| Westmorland and Furness Council | Other | 1 | £0k | 0.0% | |
| Cardiff Council | Other | 1 | £0k | 0.0% | |
| Scotland Excel | Other | 5 | £0k | 0.0% | |
| South Kesteven District Council | Other | 1 | £0k | 0.0% | |
| Somerset Council | Other | 1 | £0k | 0.0% | |