| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Maxwell George | 15 | Mt Kelly | 56.41 |
| 1 | 2 | William Rudd | 15 | Chelsea&West | 55.77 |
| 2 | 3 | James Speers | 15 | Basildon Ph | 55.58 |
| 3 | 4 | Kieran Bott | 15 | Co Leicester | 55.32 |
| 4 | 5 | William Cooper | 15 | Co Birm'ham | 54.71 |
| 5 | 6 | Jacob Armon | 15 | Seals RSA | 54.75 |
| 6 | 7 | Ethan Grace-Riches | 15 | Lincoln Vulc | 55.41 |
| 7 | 8 | Aarian Lally | 15 | Hillingdon | 55.73 |
| 8 | 9 | Charley Langford | 15 | Thanet Swim | 55.81 |
| 9 | 10 | Andrew Hall | 15 | Nova Cent'n | 56.47 |