British Box Office For April 2021
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Godzilla vs. Kong | $3,608,866 | 432 | - | - | - | Apr 16 | - | Warner Bros. |
| 2 | Tom & Jerry | $1,756,216 | 372 | - | - | - | Apr 16 | - | Warner Bros. |
| 3 | Judas and the Black Messiah | $515,147 | 289 | - | - | - | Apr 16 | - | Warner Bros. |
| 4 | Minari | $240,322 | 122 | - | - | - | Apr 9 | - | Altitude Film Entertainment |
| 5 | The Witches | $38,076 | 117 | - | - | - | Apr 16 | - | Warner Bros. |
| 6 | The Mauritanian | $6,342 | 13 | - | - | - | Apr 2 | - | STX Entertainment |
| 7 | Sisters with Transistors | $5,241 | 2 | - | - | - | Apr 23 | - | Modern Films |
