| Name | Total Supplied | |
|---|---|---|
| McKinsey & Company | £1,452,049 | |
| L.A. INTERNATIONAL COMPUTER CONSULTANTS LIMITED | £282,719 | |
| WILLIS TOWERS WATSON T/A WILLIS LTD | £141,120 | |
| MATCHTECH GROUP (UK) LIMITED | £125,085 | |
| GEORGE CORDEROY & CO | £109,655 | |
| MTC OPERATIONS LIMITED | £100,000 | |
| Mace Limited | £61,275 | |
| ALEXANDER MANN SOLUTIONS LIMITED | £56,839 | |
| CITY AND GUILDS KINEO LIMITED | £32,000 | |
| ARCADIS LLP | £30,800 | |
| INDEPENDENT TRANSPORT COMMISSION (ITC) | £25,000 |