Britain's Got Talent (series 2) Ratings Ratings

| Show_ | Date_ | Official_ratings_millions | Weekly_rank | Share_ |
|---|---|---|---|---|
| Auditions 1 | 12 April | 9.44 | 6 | 37.0% |
| Auditions 2 | 19 April | 10.96 | 1 | 43.3% |
| Auditions 3 | 26 April | 9.86 | 3 | 41.3% |
| Auditions 4 | 3 May | 9.12 | 5 | 39.1% |
| Auditions 5 | 10 May | 8.17 | 6 | 37.9% |
| Auditions 6 | 17 May | 9.11 | 2 | 37.5% |
| Auditions 7 | 24 May | 8.27 | 5 | 37.2% |
| Semi-final 1 | 26 May | 11.33 | 4 | 42.0% |
| Semi-final 2 | 27 May | 9.29 | 9 | 35.3% |
| Semi-final 3 | 28 May | 10.03 | 6 | 35.9% |
| Semi-final 4 | 29 May | 10.13 | 5 | 41.9% |
| Semi-final 5 | 30 May | 11.86 | 2 | 50.0% |
| Live final | 31 May | 11.52 | 3 | 51.1% |
| Live final results | 31 May | 13.88 | 1 | 55.1% |
| Series average | 2008 | 10.21 | TBC | 41.8% |