| Redcar & Cleveland Borough Council | 1,249 | 1,171 | £73,906 |
| Cambridgeshire County Council | 1,219 | 827 | £112,000 |
| Radioactive Waste Management Limited | 1,219 | 1,179 | £32,344 |
| Norfolk County Council | 1,217 | 863 | £155,000 |
| Essex County Council | 1,208 | 761 | £300,000 |
| Department of Health and Social Care (DHSC) | 1,206 | 1,137 | £386,242 |
| Forestry and Land Scotland | 1,202 | 1,159 | £43,559 |
| Bank of England | 1,197 | 1,135 | £120,000 |
| Bournemouth Christchurch and Poole Council | 1,182 | 1,060 | £125,000 |
| University of Leeds | 1,157 | 546 | £100,000 |
| Southampton City Council | 1,139 | 888 | £140,000 |
| Department for International Development | 1,134 | 905 | £3,000,000 |
| NHS England | 1,129 | 915 | £657,720 |
| Bath and North East Somerset Council | 1,112 | 854 | £100,590 |
| Natural England | 1,112 | 894 | £25,000 |
| The Common Services Agency (more commonly known as NHS National Services Scotland) ("NSS") | 1,111 | 974 | £1,311,500 |
| Fife Council | 1,109 | 573 | £211,071 |
| West Midlands Combined Authority | 1,099 | 852 | £105,000 |
| East Sussex County Council | 1,096 | 982 | £134,950 |
| Coventry - Solihull - Warwickshire | 1,094 | 325 | £200,000 |
| Rotherham Metropolitan Borough Council | 1,091 | 884 | £120,000 |
| North Tyneside Council | 1,085 | 795 | £120,000 |
| Portsmouth City Council | 1,084 | 438 | £537,500 |
| Shropshire Healthcare Procurement Service | 1,081 | 177 | £100,000 |
| Sellafield Limited | 1,029 | 849 | £368,810 |
| Metropolitan Police Service | 1,008 | 732 | £499,000 |
| Middlesbrough Council | 998 | 977 | £74,856 |
| Cheshire west and Chester Borough Council | 996 | 806 | £100,000 |
| Wokingham Borough Council | 993 | 752 | £85,500 |
| CTM Portal for the NDA Shared Services Alliance | 990 | 748 | £208,489 |
| Brighton & Hove City Council | 984 | 764 | £179,743 |
| Devon County Council | 980 | 808 | £240,000 |
| Health & Safety Executive | 979 | 757 | £29,084 |
| Dudley Metropolitan Borough Council | 978 | 516 | £200,000 |
| NHS North East and North Cumbria Integrated Care Board | 965 | 923 | £660,000 |
| South Tyneside Council | 964 | 879 | £99,522 |
| West Yorkshire Combined Authority | 962 | 642 | £105,000 |
| Northumberland County Council | 937 | 592 | £112,500 |
| BIP Solutions Limited | 934 | 430 | £100,000 |
| Torbay Council | 934 | 829 | £106,250 |
| Isle of Wight Council | 928 | 771 | £110,000 |
| London Borough of Merton | 920 | 732 | £82,466 |
| Financial Conduct Authority | 919 | 835 | £230,400 |
| the university of Warwick | 910 | 434 | £128,300 |
| Historic England | 907 | 492 | £32,000 |
| Peterborough City Council | 907 | 618 | £95,000 |
| Herefordshire Council | 904 | 555 | £100,000 |
| University of Glasgow | 903 | 661 | £212,000 |
| University Hospitals Birmingham NHS Foundation Trust | 900 | 508 | £170,000 |
| London Borough of Lewisham | 899 | 691 | £495,735 |
| University of Southampton | 899 | 741 | £120,000 |
| Centre for Process Innovation Limited | 897 | 737 | £157,000 |
| Halton Borough Council | 890 | 719 | £70,642 |
| National Audit Office | 890 | 846 | £40,520 |
| Worcestershire County Council | 887 | 355 | £50,000 |
| Medway Council | 882 | 169 | £120,000 |
| Plymouth City Council | 876 | 716 | £86,000 |
| Greater Manchester Combined Authority | 869 | 731 | £120,123 |
| Hm Land Registry | 869 | 843 | £50,365 |
| Knowsley Council | 869 | 710 | £100,000 |
| University of York | 860 | 466 | £47,000 |
| North Northamptonshire Council | 858 | 700 | £84,600 |
| University of Derby | 858 | 658 | £62,616 |
| Science Museum Group | 857 | 419 | £85,000 |
| Swindon Borough Council | 856 | 424 | £206,501 |
| Telford & Wrekin Council | 851 | 555 | £100,000 |
| Cambridge University Hospitals NHS Foundation Trust | 848 | 738 | £34,946 |
| British Business Bank | 837 | 782 | £80,000 |
| Wigan Council | 836 | 615 | £120,000 |
| Bedford Borough Council | 826 | 601 | £161,100 |
| Royal Botanic Gardens, Kew | 822 | 774 | £50,000 |
| NHS Blood and Transplant | 820 | 594 | £300,000 |
| Perth & Kinross Council | 820 | 753 | £39,796 |
| The City of Edinburgh Council | 818 | 663 | £350,000 |
| Hs2 | 814 | 757 | £89,235 |
| Norfolk and Norwich University Hospitals NHS Foundation Trust | 808 | 752 | £60,000 |
| Oxfordshire County Council | 808 | 497 | £187,596 |
| Manchester City Council | 804 | 582 | £350,000 |
| University of East Anglia | 804 | 617 | £168,794 |
| Lancashire Constabulary | 794 | 781 | £50,463 |
| Hee | 792 | 789 | £92,198 |
| Buckinghamshire Council - e-Tendering System | 786 | 786 | £1,275,536 |
| Department for Digital, Culture, Media & Sport | 786 | 720 | £50,000 |
| Southend-on-sea Borough Council | 784 | 402 | £110,000 |
| The Mayor and Commonalty and Citizens of the City of London | 782 | 651 | £300,000 |
| Wirral Borough Council | 780 | 469 | £120,000 |
| Coventry City Council | 777 | 701 | £150,000 |
| Office for National Statistics | 774 | 625 | £60,000 |
| University of Edinburgh | 772 | 629 | £198,000 |
| Sheffield Hallam University | 763 | 700 | £80,000 |
| British Council | 761 | 259 | £100,000 |
| Blackpool Council | 753 | 592 | £160,000 |
| Betsi Cadwaladr University Health Board | 749 | 37 | £242,640 |
| Medicines and Healthcare Products Regulatory Agency | 748 | 571 | £62,922 |
| Care Quality Commission | 746 | 674 | £42,300 |
| Thirteen Housing Group Limited | 745 | 627 | £100,000 |
| Ipswich Borough Council | 744 | 410 | £55,890 |
| The Royal Borough of Kingston upon Thames | 744 | 575 | £130,625 |
| Eu Supply Limited | 738 | 156 | £250,001 |
| Forestry Commission | 735 | 473 | £100,000 |