| Champions League 2010/2011 - Appearances as Referee |  |
 |
 |
||||
| 29/09/2010 | Panathinaikos | - | FC København | 0:2 | 3 | 1 | - |
| 20/10/2010 | FC Schalke 04 | - | Hapoel Tel Aviv | 3:1 | 2 | - | - |
| 08/12/2010 | CFR Cluj | - | AS Roma | 1:1 | 2 | - | - |
| Champions League 2010/2011 - Appearances as Referee | |
|
|
||||
| 29/09/2010 | Panathinaikos | - | FC København | 0:2 | 3 | 1 | - |
| 20/10/2010 | FC Schalke 04 | - | Hapoel Tel Aviv | 3:1 | 2 | - | - |
| 08/12/2010 | CFR Cluj | - | AS Roma | 1:1 | 2 | - | - |
| Complete name: | William Collum |
| Born: | 18/01/1979 |
| Place of birth: |
Glasgow, 
Scotland |
| Residence: | Motherwell |
| Nationality: |
Scotland |
| Profession: | Lehrer |
| Height: | 174 cm |
| Weight: | 69 kg |