The following individuals or organisations have commissioned work on this building/design:
client classic
| Name | Notes |
| Trustees of the Order of the Thistle | |
| Buccleuch, 6th Duke of | One of the Trustees of the Order of the Thistle |
| Rosebery, 5th Earl of | One of the Trustees of the Order of the Thistle |
| Leven, 12th Earl of (and 10th of Melville) | One of the Trustees of the Order of the Thistle |
| McDonnell, Schomberg (Sir) | Secretary to the Office of Works |
| H M Office of Works | Commissioned the architect and paid the bills |