| Newport City Council | Central government | 112 | 1 | £161,713,714 |
| Optivo | not classified | 20 | 0 | £161,133,000 |
| Office for National Statistics | Central government | 115 | 0 | £160,721,130 |
| Defra Group Commercial | not classified | 32 | 0 | £159,794,001 |
| North West Ambulance Service NHS Trust | Central government | 38 | 1 | £159,768,545 |
| Barts Health NHS Trust | Central government | 42 | 0 | £159,016,000 |
| Longhurst Group | not classified | 7 | 0 | £158,556,000 |
| The British Broadcasting Corporation (BBC)Broadcasting House | not classified | 1 | 0 | £158,000,000 |
| NHS ENGLAND NORTH WEST (Lancashire and South Cumbria) | NHS & health | 23 | 0 | £157,846,858 |
| North of England Commissioning Support Unit | not classified | 10 | 0 | £157,627,764 |
| NHS Supply Chain – Hotel Services is operated by North of England Commercial Procurement Collaborative (‘NOE CPC’) (who are hosted by Leeds and York Partnership NHS Foundation Trust) is acting on behalf of Supply Chain Coordination Ltd | NHS & health | 2 | 0 | £157,000,000 |
| NHS Black Country Integrated Care Board | Central government | 48 | 0 | £156,835,359 |
| RHP | not classified | 2 | 0 | £155,950,000 |
| South Gloucestershire Council | Local authority | 150 | 2 | £155,376,950 |
| Salisbury NHS Foundation Trust | Central government | 119 | 0 | £155,040,232 |
| ORDNANCE SURVEY LIMITED | Other public body | 145 | 0 | £154,406,554 |
| University Of Edinburgh | Education | 294 | 0 | £154,360,722 |
| General Medical Council (GMC) | Local authority | 118 | 3 | £152,074,150 |
| Lisburn & Castlereagh City Council | Local authority | 184 | 3 | £151,293,868 |
| Cambridgeshire Community Services NHS Trust | Central government | 55 | 0 | £150,674,430 |
| Mid and east Antrim Borough Council | Local authority | 61 | 0 | £150,470,000 |
| Financial Services Compensation Scheme | Other public body | 68 | 0 | £150,460,000 |
| BELFAST HARBOUR COMMISSIONERS | not classified | 18 | 0 | £150,350,000 |
| Rail for London | not classified | 1 | 0 | £150,000,000 |
| East Suffolk Council | Local authority | 155 | 2 | £149,569,279 |
| NHS England - Commissioning Board | NHS & health | 2 | 0 | £149,191,964 |
| Places for People on behalf of PfP & Anchor Hanover Group | Other public body | 156 | 5 | £148,437,666 |
| HARRIS FEDERATION | Other public body | 26 | 0 | £148,411,578 |
| Cambridge University Hospitals NHS Foundation Trust | Central government | 842 | 1 | £145,603,417 |
| NHS Commissioning Board - NHS England | NHS & health | 1 | 0 | £145,379,982 |
| WAV PT Waverley Borough Council Leisure Management Contract | Local authority | 1 | 0 | £145,196,440 |
| 2Gether Support Solutions Limited | Central government | 41 | 1 | £144,954,807 |
| Sovereign Network Group | not classified | 30 | 0 | £144,222,000 |
| Mid Sussex District Council | Local authority | 21 | 0 | £143,464,333 |
| Gloucestershire Health and Care NHS Foundation Trust | Central government | 60 | 1 | £142,305,000 |
| Wakefield and District Housing Limited | not classified | 19 | 0 | £141,980,000 |
| Royal National Orthopaedic Hospital NHS Trust | Central government | 22 | 0 | £141,600,915 |
| Karbon Homes | Other public body | 108 | 3 | £141,591,000 |
| Northern Ireland Prison Service | Central government | 36 | 0 | £141,213,745 |
| Latimer Kirkstall Limited | not classified | 4 | 0 | £140,500,000 |
| Merthyr Tydfil County Borough Council | Local authority | 127 | 1 | £140,069,270 |
| Peabody Developments Limited | not classified | 1 | 0 | £140,000,000 |
| West Northamptonshire Council Leisure Operating Contract | Local authority | 1 | 0 | £140,000,000 |
| MHRA | Central government | 120 | 5 | £139,576,333 |
| LONDON GATEWAY PORT LIMITED | Other public body | 43 | 0 | £139,410,000 |
| CPD - Construction Division | not classified | 24 | 0 | £139,150,001 |
| ABELLIO EAST MIDLANDS LIMITED | not classified | 91 | 0 | £138,980,000 |
| Oil and Pipelines Agency | Central government | 28 | 2 | £138,743,800 |
| Carmarthenshire County Council | Local authority | 210 | 2 | £136,622,213 |
| Neath Port Talbot County Borough Council | Local authority | 92 | 1 | £136,454,707 |
| NHS South, Central and West Commissioning Support Unit (hosted by NHS England) | Central government | 49 | 0 | £136,162,095 |
| University of Staffordshire | Education | 31 | 0 | £135,870,000 |
| Via East Midlands LTD | Other public body | 57 | 2 | £135,465,000 |
| The Department of Finance, | not classified | 11 | 0 | £134,500,000 |
| HM Land Registry | Central government | 44 | 0 | £134,320,000 |
| Care Quality Commission | Central government | 64 | 0 | £132,884,706 |
| Velindre NHS Trust, NHS Wales Shared Services Partnership - Procurement Services (on behalf of All Wales LHB's and Trusts) | NHS & health | 28 | 0 | £132,728,232 |
| English Heritage Trust | not classified | 37 | 0 | £132,153,000 |
| Norfolk and Norwich University Hospitals NHS Foundation Trust | Central government | 207 | 0 | £131,636,455 |
| Armagh City Banbridge and Craigavon Borough Council | Local authority | 162 | 3 | £130,683,695 |
| Wrexham County Borough Council | Local authority | 271 | 5 | £130,584,654 |
| National Audit Office | Central government | 54 | 0 | £130,480,833 |
| Isle of Anglesey County Council | Local authority | 63 | 2 | £130,405,666 |
| Brunel University London | Education | 18 | 0 | £130,350,000 |
| NORTHUMBRIAN WATER GROUP LIMITED | not classified | 40 | 0 | £130,300,000 |
| Rochford District Council | Local authority | 19 | 0 | £130,164,000 |
| RADIUS HOMES LIMITED | Other public body | 12 | 1 | £129,726,056 |
| Progress Housing Group | Housing | 41 | 2 | £129,684,000 |
| Department of Education | Central government | 23 | 0 | £127,874,000 |
| Stroud District Council | Local authority | 40 | 3 | £127,263,500 |
| Northumbria Healthcare Facilities Management | Central government | 192 | 2 | £127,224,113 |
| SOUTH WESTERN RAILWAY LIMITED | Other public body | 47 | 1 | £127,030,931 |
| A2Dominion | not classified | 11 | 0 | £126,338,210 |
| Babergh District Council | Local authority | 55 | 3 | £125,375,000 |
| Apex Housing Association | Housing | 38 | 3 | £125,004,836 |
| North of England Commercial Procurement Collaborative (NOE CPC) (hosted by and acting through Leeds and York Partnership NHS Foundation Trust.) | NHS & health | 22 | 0 | £125,000,000 |
| U.M. Association Limited | not classified | 1 | 0 | £125,000,000 |
| NHS Leicester, Leicestershire and Rutland Integrated Care Board | Central government | 73 | 0 | £124,988,327 |
| Harborough District Council | Local authority | 13 | 1 | £124,190,000 |
| South East Coast Ambulance Service NHS Foundation Trust | Central government | 48 | 0 | £123,969,578 |
| NHS England - Specialised Commissioning | NHS & health | 9 | 0 | £123,925,904 |
| Asra Construction Services Limited | not classified | 10 | 0 | £123,200,000 |
| Devon and Cornwall Police | Police & fire | 30 | 2 | £122,942,000 |
| Oldham Council | Local authority | 206 | 4 | £122,934,510 |
| BRIGHTER PLACES | not classified | 6 | 0 | £122,346,805 |
| Isle of Wight NHS Trust | Central government | 345 | 4 | £121,225,981 |
| Plymouth Community Homes | Other public body | 163 | 1 | £120,913,491 |
| Salvation Army Housing Association | Housing | 17 | 0 | £120,630,999 |
| Dounreay Site Restoration Limited | not classified | 22 | 0 | £120,514,000 |
| North West London Clinical Commissioning Group | NHS & health | 14 | 0 | £120,000,000 |
| Construction Industry Training Board | Other public body | 168 | 0 | £118,987,300 |
| Health Education and Improvement Wales (HEIW) | Central government | 75 | 0 | £118,430,221 |
| Betsi Cadwaladr University Health Board | Education | 238 | 5 | £118,253,859 |
| Aneurin Bevan University Health Board | Central government | 121 | 0 | £118,249,872 |
| NHS England Greater Manchester Integrated Care Board (GM ICB) | NHS & health | 1 | 0 | £118,213,571 |
| Wessex NHS Procurement Limited | NHS & health | 1 | 0 | £118,000,000 |
| Loughborough University | Education | 63 | 0 | £117,861,000 |
| Newry Mourne & Down District Council | Local authority | 225 | 7 | £117,745,476 |
| Mersey Care NHS Trust | NHS & health | 3 | 0 | £117,389,000 |
| The Mersey Docks and Harbour Company | Other public body | 28 | 1 | £116,533,000 |