| Rank | 18-21 September 2020 | Weekend box office/ £ | Cumulative box office/ £ |
|---|---|---|---|
| 1 | Tenet (Warner Bros) | 648,517 | 14,995,041 |
| 2 | After We Collided (Shear Entertainment) | 514,020 | 2,563,372 |
| 3 | Bill and Ted Face the Music (Warner Bros) | 216,790 | 834,981 |
| 4 | Onward (Walt Disney) | 126,355 | 7,308,920 |
| 5 | The New Mutants (Walt Disney) | 93,253 | 1,474,117 |
| 6 | 100% Wolf (Vertigo UK) | 89,634 | 1,281,535 |
| 7 | Unhinged (Altitude Film) | 60,113 | 1,747,401 |
| 8 | Rocks (Altitude) | 53,299 | 173,349 |
| 9 | Trolls World Tour (Universal) | 36,826 | 882,002 |
| 10 | Schemers (Munro Films) | 34,474 | 34,474 |
Source: comScore