Teams George Mumford played for
| Main FC | Marylebone Cricket Club (1867) |
| Middlesex (1867-1872) | |
| Other FC | Professionals of Marylebone Cricket Club (1867) |
| Miscellaneous | Ealing (1862-1875) |
| Middlesex Colts (1865-1866) | |
| Colts of England (1867) | |
| Marylebone Cricket Club (1867-1869) |