| Savills | London, Westminster, Cambridge | 6 | 30 |
| Penna | Tower Hamlets, City of London | 21 | 30 |
| Profile Security Services | North Lincolnshire, Barrow upon Humber | 8 | 16 |
| MPD FM | Barking and Dagenham, Dagehnam, Dagenham | 7 | 7 |
| Reed Specialist Recruitment | Camden, Leeds, Westminster | 6 | 33 |
| Investigo | Tower Hamlets, London, City of London | 5 | 22 |
| Avison Young | Birmingham | 12 | 12 |
| Cushman & Wakefield | City of London, Leeds | 11 | 16 |
| Arcadis Consulting | Cardiff, London | 8 | 23 |
| First Response Group | Leeds | 8 | 3 |
| AECOM | Tower Hamlets, London | 7 | 137 |
| WSP | City of London, London | 7 | 132 |
| Interquest Group | Camden, Dacorum | 7 | 2 |
| Morgan Hunt | City of London, London | 6 | 14 |
| Ward Williams Associates | Cornwall, Truro | 6 | 6 |
| SQW | Oxford | 4 | 19 |
| Deloitte | City of London | 3 | 122 |
| Calfordseaden | London, Bromley | 3 | 20 |
| Rider Levett Bucknall | Birmingham | 3 | 21 |
| Turner & Townsend Project Management | Leeds, City of London | 3 | 13 |
| Stace | Epping, Epping Forest | 3 | 7 |
| RG P | Leicester | 3 | 7 |
| Evisa | St Albans, Hackney | 3 | 3 |
| Welling Partnership Property & Construction Consultants | Southampton | 3 | 3 |
| Pricewaterhousecoopers | London, Westminster | 2 | 75 |
| Jacobs | Wokingham, Southwark | 2 | 62 |
| Eversheds Sutherland | Leeds, City of London | 2 | 20 |
| Stantec | High Wycombe, Wycombe | 2 | 15 |
| Amion Consulting | Liverpool | 2 | 12 |
| BDP | Manchester, Islington | 2 | 13 |
| BNP Paribas Real Estate Advisory & Property Management UK Li | City of London | 17 | 17 |
| Evisa Solutions | St Albans | 11 | 7 |
| Lambert Smith Hampton | Westminster | 6 | 11 |
| Malikshaw | St Albans | 6 | 6 |
| Eddisons | Leeds | 6 | 4 |
| Allen Lane | Camden | 5 | 45 |
| Tile Hill | North Hertfordshire | 5 | 3 |
| Tibbalds Campbellreith JV Campbellreith | Reigate and Banstead | 4 | 4 |
| SSG Support Services Goup | Havering | 4 | 4 |
| Tetra TECH | Leeds | 4 | 4 |
| Carter Jonas | Westminster | 3 | 21 |
| WYG Engineering | Leeds | 3 | 17 |
| Cushman & Wakefield Debenham Tie Leung | London | 3 | 9 |
| Colliers International Property Advisers | Westminster | 3 | 3 |
| Reed | Camden | 3 | 7 |
| XMA | Rushcliffe | 2 | 93 |
| Atkins | Epsom and Ewell | 2 | 128 |
| Hays Specialist Recruitment | Camden | 2 | 80 |
| Boston Consulting Group | Westminster | 2 | 22 |
| Wood Environment & Infrastructure Solutions | Cheshire East | 2 | 13 |
| Experian | Nottingham | 2 | 8 |
| Sanderson Weatherall | Leeds | 2 | 13 |
| Sellick Partnership | | 2 | 9 |
| DSM Demolition | Birmingham | 2 | 5 |
| SSG Support Services Group | Romford | 2 | 4 |
| Reed Recruitment | Sunderland | 2 | 3 |
| Thomas Lister | Bromsgrove | 2 | 2 |
| Civil Service KPMG | Tower Hamlets | 2 | 2 |
| Hartnell Taylor Cook | Bristol, City of | 2 | 2 |
| Man Coed VM | Flintshire | 2 | 2 |
| Mcbains | London | 2 | 2 |
| Nigel Wright | Newcastle upon Tyne | 2 | 2 |
| Relyon Guarding & Security Services | South Gloucestershire | 2 | 2 |
| Tetra TECH Management Services | Leeds | 2 | 2 |
| Softcat | Wycombe | 1 | 176 |
| Insight Direct | Sheffield | 1 | 121 |
| Phoenix Software | Mole Valley | 1 | 93 |
| Ove Arup & Partners | London | 1 | 72 |
| Specialist Computer Centres | Birmingham | 1 | 122 |
| Mott Macdonald | Croydon | 1 | 60 |
| Churchill Contract Services | St Albans | 1 | 40 |
| Grant Thornton | Islington | 1 | 38 |
| Oracle Corporation | Wokingham | 1 | 33 |
| Gartner | | 1 | 26 |
| Banner Group | Sheffield | 1 | 26 |
| BDO | Westminster | 1 | 32 |
| AECOM Infrastructure & Environment | Basingstoke and Deane | 1 | 30 |
| Methods Business & Digital Technology | Camden | 1 | 40 |
| Steer Davies & Gleave | London | 1 | 28 |
| Frazer Nash Consultancy | Dorking | 1 | 32 |
| Wates Construction | Mole Valley | 1 | 24 |
| Senator | Hyndburn | 1 | 17 |
| BJSS | Leeds | 1 | 23 |
| Pinsent Masons | | 1 | 17 |
| Kainos Software | Belfast | 1 | 16 |
| Systra | City of London | 1 | 13 |
| PWC | Southwark | 1 | 11 |
| Gatenbysanderson | Leeds | 1 | 11 |
| Overbury | Manchester | 1 | 18 |
| Xerox | Hillingdon | 1 | 12 |
| Mills & Reeve | City of London | 1 | 15 |
| Hatch Associates | London | 1 | 10 |
| Jones Lang Lasalle | Westminster | 1 | 11 |
| NPS Property Consultants | Brighton | 1 | 10 |
| Iceni Projects | London | 1 | 9 |
| Trowers & Hamlins | Islington | 1 | 10 |
| CACI | Hammersmith and Fulham | 1 | 18 |
| Harvey Nash | City of London | 1 | 12 |
| Proactis | York | 1 | 7 |
| Virgin Media | Reading | 1 | 7 |