Teams William Robertson played for
| Main FC | Middlesex (1900-1919) |
| Cambridge University (1901) | |
| Other FC | AJ Webbe's XI (1899) |
| KS Ranjitsinhji's XI (1899) | |
| South of England (1900) | |
| Gentlemen (1901) | |
| HDG Leveson-Gower's XI (1902) | |
| County Championship | Middlesex (1900-1919) |
| Miscellaneous | Harrow School (1896-1898) |
| Cambridge University (1899-1901) | |
| Middlesex Second XI (1900) | |
| WP Robertson's XI (1901) | |
| Quidnuncs (1901) | |
| Free Foresters (1906) | |
| Old Harrovians (1920) | |
| I Zingari (1921-1922) |