| Europa League 2008/2009 - Appearances as Referee |  |
 |
 |
||||
| 18/09/2008 | Stade Rennais | - | FC Twente | 2:1 | 3 | - | - |
| 03/12/2008 | Metalist Kharkiv | - | Olympiakos Piraeus | 1:0 | 4 | - | - |
| 26/02/2009 | VfB Stuttgart | - | Zenit St. Petersburg | 1:2 | 4 | - | - |
| Europa League 2008/2009 - Appearances as Referee | |
|
|
||||
| 18/09/2008 | Stade Rennais | - | FC Twente | 2:1 | 3 | - | - |
| 03/12/2008 | Metalist Kharkiv | - | Olympiakos Piraeus | 1:0 | 4 | - | - |
| 26/02/2009 | VfB Stuttgart | - | Zenit St. Petersburg | 1:2 | 4 | - | - |
| 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 |