| # | Firmenname | Rolle | # Projekte |
|---|---|---|---|
| 1 | 11.04 Architects Ltd. | Architekt | 0 |
| 2 | 3DReid | Architekt | 40 |
| 3 | 3s Architects LLP | Architekt | 0 |
| 4 | 3W | Architekt | 0 |
| 5 | 5plus Architects | Architekt | 1 |
| 6 | 6a Architects | Architekt | 0 |
| 7 | 777 Demolition Ltd. | Abbruchunternehmen | 15 |
| 8 | A-EM Studio Ltd. | Architekt | 0 |
| 9 | A. W. Myers | Architekt | 1 |
| 10 | A&Q Partnership | Architekt | 2 |
| 11 | A2Dominion Housing Group Ltd. | Projektentwickler | 5 |
| 12 | Abbey, Hanson, Rowe & Partners | Architekt | 1 |
| 13 | Abbott Howard Partnership | Architekt | 0 |
| 14 | Aberdeen Property Investors | Asset Manager | 0 |
| 15 | ABK Architects | Architekt | 0 |
| 16 | ABN AMRO Structured Real Estate Capital | Asset Manager | 1 |
| 17 | ABP Chartered Architects | Architekt | 0 |
| 18 | Abstract Land Limited | Projektentwickler | 3 |
| 19 | Abstract Securities (London) Ltd. | Projektentwickler | 2 |
| 20 | Acanthus LW Architects LLP | Architekt | 3 |