| Rank | Title | Weekend ⇩ |
|---|---|---|
| 1 | Backrooms / 2026 | £118,000,000 |
| 2↓ (1) | Star Wars: The Mandalorian and Grogu / 2026 | £52,800,000 |
| 3↑ (5) | Obsession / 2026 | £40,236,000 |
| 4↓ (2) | Michael / 2026 | £31,864,000 |
| 5↓ (3) | Dear You / 2026 | £27,930,100 |
| 6↓ (4) | The Devil Wears Prada 2 / 2026 | £19,200,000 |
| 7↑ (8) | Colony / 2026 | £11,963,000 |
| 8↓ (7) | The Sheep Detectives / 2026 | £9,432,804 |
| 9 | The Breadwinner / 2026 | £7,500,000 |
| 10 | Pressure / 2026 | £5,750,000 |
| 11↑ (23) | Tuner / 2026 | £2,668,622 |
| 12↓ (10) | Mortal Kombat II / 2026 | £2,000,000 |
| 13↑ (15) | The Super Mario Galaxy Movie / 2026 | £1,400,000 |
| 14↓ (13) | I Love Boosters / 2026 | £1,357,526 |
| 15 ⇅ (re) | Pegasus 3 / 2026 | £1,100,000 |
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