| Scape Group Limited | Other | 3 | £3.0bn | 57.7% | 2021-09-08 |
| HS2 | Other | 3 | £756m | 14.5% | 2023-03-20 |
| Scape Procure Limited | Other | 6 | £700m | 13.5% | 2021-01-29 |
| City of London Corporation | Other | 3 | £295m | 5.7% | 2022-03-22 |
| UNIVERSITY OF EAST ANGLIANew | Other | 1 | £88m | 1.7% | 2024-07-24 |
| National Highways | Other | 21 | £68m | 1.3% | 2025-08-29 |
| Surrey County Council | Other | 4 | £50m | 1.0% | 2023-08-14 |
| Hampshire County Council | Other | 13 | £49m | 0.9% | 2024-03-04 |
| Ministry of Justice | Other | 60 | £39m | 0.8% | 2020-12-30 |
| Homes England (the name adopted by the Homes and Communities Agency) | Other | 14 | £16m | 0.3% | 2026-04-10 |
| UNIVERSITY COLLEGE LONDON | Other | 1 | £14m | 0.3% | 2016-06-24 |
| Department for Education | Other | 7 | £12m | 0.2% | 2022-03-24 |
| DERBY CITY COUNCIL | Other | 3 | £10m | 0.2% | 2019-02-13 |
| Department of Health & Social Care | Other | 2 | £8m | 0.2% | 2020-11-26 |
| Ministry of Defence | Other | 10 | £7m | 0.1% | 2024-01-22 |
| Sunderland City Council | Other | 2 | £7m | 0.1% | 2024-11-30 |
| National Heritage Memorial Fund | Other | 1 | £7m | 0.1% | 2018-01-30 |
| Defence Infrastructure Organisation | Other | 3 | £6m | 0.1% | 2022-08-09 |
| Metropolitan Police Service | Other | 2 | £6m | 0.1% | 2022-10-21 |
| NUCLEAR DECOMMISSIONING AUTHORITY | Other | 1 | £6m | 0.1% | 2023-08-07 |
| Transport for the North | Other | 2 | £5m | 0.1% | 2020-05-01 |
| Cornwall Council | Other | 3 | £4m | 0.1% | 2018-09-02 |
| Southampton City Council | Other | 3 | £4m | 0.1% | 2024-06-02 |
| Department for Work & Pensions | Other | 4 | £3m | 0.1% | 2023-02-08 |
| Cambridgeshire and Peterborough Combined Authority | Other | 7 | £2m | 0.0% | 2022-04-08 |
| Liverpool City Council | Other | 2 | £2m | 0.0% | 2022-10-03 |
| GREATER MANCHESTER EDUCATION TRUST | Other | 1 | £2m | 0.0% | 2021-03-01 |
| Ministry of Defence, DIO, | Other | 1 | £2m | 0.0% | 2018-04-12 |
| Sheffield City Council | Other | 1 | £2m | 0.0% | 2018-11-06 |
| Espo | Other | 1 | £2m | 0.0% | 2017-12-19 |
| Manchester City Council | Other | 5 | £2m | 0.0% | 2025-06-27 |
| Royal Borough of Greenwich | Other | 1 | £2m | 0.0% | 2018-08-17 |
| National Highways Limited | Other | 8 | £2m | 0.0% | 2020-12-18 |
| Cumberland Council | Other | 2 | £2m | 0.0% | 2023-06-28 |
| HealthTrust Europe LLP (HTE) acting as agent for the University Hospitals of Coventry and Warwickshire NHS Trust (“UHCW”) | Other | 1 | £2m | 0.0% | 2019-12-20 |
| Peabody Trust | Other | 1 | £1m | 0.0% | 2020-08-04 |
| H M REVENUE & CUSTOMS | Other | 1 | £1m | 0.0% | 2022-12-02 |
| Merseyside Police - Procurement Department | Other | 1 | £1m | 0.0% | 2021-03-25 |
| Stoke-on-Trent City Council | Other | 2 | £1m | 0.0% | 2020-02-10 |
| Joint Procurement Service for Surrey and Sussex Police | Other | 1 | £1m | 0.0% | 2020-11-23 |
| THE UNIVERSITY OF BIRMINGHAM | Other | 5 | £1m | 0.0% | 2019-01-25 |
| East Riding of Yorkshire | Other | 1 | £1m | 0.0% | 2018-11-07 |
| The Christie NHS Foundation Trust | Other | 2 | £900k | 0.0% | 2018-05-01 |
| The Metropolitan Police Federation | Other | 1 | £868k | 0.0% | 2022-10-25 |
| UNIVERSITY OF SOUTHAMPTON | Other | 1 | £784k | 0.0% | 2018-09-24 |
| Staffordshire University | Other | 1 | £750k | 0.0% | 2018-06-12 |
| University of Leicester | Other | 1 | £703k | 0.0% | 2020-05-11 |
| capitalEsourcing | Other | 2 | £675k | 0.0% | 2023-06-30 |
| Watford Borough Council | Other | 1 | £665k | 0.0% | 2020-04-07 |
| Bristol City Council | Other | 5 | £654k | 0.0% | 2020-11-27 |
| Cambridgeshire District Councils | Other | 1 | £500k | 0.0% | 2019-06-13 |
| Department for Transport | Other | 2 | £433k | 0.0% | 2020-04-28 |
| London Borough of Hackney | Other | 2 | £430k | 0.0% | 2024-10-11 |
| Network Homes Limited | Other | 1 | £429k | 0.0% | 2016-11-01 |
| HCC - Resources | Other | 1 | £420k | 0.0% | 2021-08-24 |
| Buckinghamshire Council | Other | 2 | £411k | 0.0% | 2024-06-30 |
| Royal Air Force (RAF) - Headquarters : Ministry of Defence | Other | 1 | £392k | 0.0% | 2020-01-15 |
| ASTON UNIVERSITY | Other | 1 | £391k | 0.0% | 2019-07-02 |
| Crown Commercial Service | Other | 2 | £388k | 0.0% | 2019-12-13 |
| HM Revenue & Customs | Other | 2 | £369k | 0.0% | 2019-03-29 |
| Medicines and Healthcare Products Regulatory Agency | Other | 1 | £300k | 0.0% | 2024-02-16 |
| Care Quality Commission | Other | 2 | £296k | 0.0% | 2023-02-02 |
| Southampton Solent University | Other | 2 | £278k | 0.0% | 2016-03-22 |
| MHRA | Other | 1 | £250k | 0.0% | 2018-11-16 |
| UK Research and Innovation | Other | 2 | £244k | 0.0% | 2023-08-31 |
| South Yorkshire Police Headquarters | Other | 2 | £202k | 0.0% | 2022-07-28 |
| The Hillingdon Hospitals NHS Foundation Trust | Other | 6 | £193k | 0.0% | 2022-03-08 |
| Department for Culture, Media and Sport | Other | 2 | £184k | 0.0% | 2020-06-08 |
| Derbyshire County Council | Other | 1 | £179k | 0.0% | 2019-07-02 |
| UK SHARED BUSINESS SERVICES LIMITED | Other | 3 | £172k | 0.0% | 2023-05-08 |
| East Riding of Yorkshire Council | Other | 1 | £150k | 0.0% | 2022-06-24 |
| Great Yarmouth Borough Council | Other | 1 | £142k | 0.0% | 2018-07-17 |
| Nottingham City Council | Other | 1 | £137k | 0.0% | 2018-04-25 |
| Falmouth Exeter Plus | Other | 1 | £134k | 0.0% | 2016-05-11 |
| Winchester City Council | Other | 1 | £121k | 0.0% | 2018-11-19 |
| Home Office | Other | 5 | £113k | 0.0% | 2016-07-06 |
| Army Commercial | Other | 1 | £105k | 0.0% | 2022-02-17 |
| DUE NORTH LIMITEDNew | Other | 1 | £98k | 0.0% | 2025-11-27 |
| DUDLEY MBC | Other | 1 | £95k | 0.0% | 2023-02-01 |
| Staffordshire County Council | Other | 1 | £90k | 0.0% | 2016-02-23 |
| British Museum | Other | 1 | £83k | 0.0% | 2016-01-26 |
| Bradford Metropolitan District Council | Other | 1 | £70k | 0.0% | 2018-03-29 |
| Wolverhampton City Council | Other | 1 | £70k | 0.0% | 2018-08-22 |
| Herefordshire Council | Other | 1 | £65k | 0.0% | 2016-02-17 |
| The Crown Estate | Other | 1 | £60k | 0.0% | 2024-04-05 |
| Torbay Council | Other | 1 | £50k | 0.0% | 2023-10-31 |
| Horsham District Council | Other | 1 | £43k | 0.0% | 2023-08-01 |
| Bath and North East Somerset Council | Other | 1 | £38k | 0.0% | 2024-05-14 |
| University Of The West Of England | Other | 1 | £35k | 0.0% | 2023-11-23 |
| Nottinghamshire County Council | Other | 1 | £31k | 0.0% | 2023-08-14 |
| HM Treasury | Other | 1 | £28k | 0.0% | 2020-03-09 |
| University of Plymouth | Other | 1 | £21k | 0.0% | 2019-04-18 |
| Surrey and Borders Partnership NHS Foundation Trust | Other | 1 | £0k | 0.0% | 2018-12-12 |
| Transport for London | Other | 1 | £0k | 0.0% | 2016-05-01 |
| Pagabo | Other | 1 | £0k | 0.0% | 2024-04-12 |
| Norfolk County Council | Other | 1 | £0k | 0.0% | 2023-07-13 |
| Supply Hertfordshire | Other | 1 | £0k | 0.0% | 2019-03-12 |
| United Lincolnshire Hospitals NHS Trust | Other | 1 | £0k | 0.0% | 2018-08-31 |
| Coventry - Solihull - Warwickshire | Other | 1 | £0k | 0.0% | 2018-06-26 |
| SE Shared Services | Other | 2 | £0k | 0.0% | 2017-09-28 |
| The Association of North East Councils Limited | Other | 1 | £0k | 0.0% | 2017-09-19 |
| WESTWORKS PROCUREMENT LIMITED | Other | 1 | £0k | 0.0% | 2017-06-21 |
| High Speed Two (HS2) Limited | Other | 1 | £0k | 0.0% | 2016-10-17 |
| Birmingham City Council | Other | 1 | £0k | 0.0% | 2016-09-20 |
| University of Worcester | Other | 1 | £0k | 0.0% | 2016-07-28 |
| Ofgem | Other | 1 | £0k | 0.0% | 2015-08-26 |
| United Kingdom Atomic Energy Authority | Other | 2 | £0k | 0.0% | |
| The Education Alliance | Other | 2 | £0k | 0.0% | |
| Hertfordshire County Council | Other | 1 | £0k | 0.0% | |
| Carmarthenshire County Council | Other | 1 | £0k | 0.0% | |
| Network Rail Infrastructure Ltd | Other | 1 | £0k | 0.0% | |
| NHS Wales Shared Services Partnership (hosted by Velindre University NHS Trust) | Other | 1 | £0k | 0.0% | |
| Cardiff Council | Other | 1 | £0k | 0.0% | |