List of Britain's Got Talent episodes Series 5 (2011) Series 5 (2011)

| Episode | Date_ | Official_ITV1_rating_millions | Weekly_rank | Share_ | Official_ITV1_HD_rating_millions | Total_ITV1_viewers_millions |
|---|---|---|---|---|---|---|
| Auditions 1 | 16 April | 9.74 | 3 | 40.5 | 1.110 | 10.850 |
| Auditions 2 | 23 April | 9.15 | 3 | 41.5 | 0.897 | 10.047 |
| Auditions 3 | 30 April | 9.27 | 1 | 39.9 | 0.952 | 10.222 |
| Auditions 4 | 7 May | 10.20 | 1 | 42.2 | 1.012 | 11.212 |
| Auditions 5 | 14 May | 8.61 | 3 | 32.0 | 0.835 | 9.445 |
| Auditions 6 | 21 May | 9.81 | 1 | 42.2 | 0.959 | 10.769 |
| Auditions 7 | 29 May | 9.88 | 1 | 40.4 | 1.185 | 11.065 |
| Semi-final 1 | 30 May | 10.59 | 4 | 41.9 | 1.272 | 11.862 |
| Semi-final 1 results | 30 May | 9.92 | 6 | 38.2 | 1.003 | 10.923 |
| Semi-final 2 | 31 May | 9.30 | 10 | 40.5 | 1.011 | 10.311 |