| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Henry DIXON | 16 | Aquae Sulis | 56.56 |
| 1 | 2 | Harry MIDDLETON | 16 | Plymouth Lea | 56.35 |
| 2 | 3 | Jack TUCKER | 16 | Millfield | 55.24 |
| 3 | 4 | James WATSON | 16 | Swindon Dolp | 55.03 |
| 4 | 5 | Jakob GOODMAN | 16 | Millfield | 54.87 |
| 5 | 6 | Jacob PETERS | 16 | Poole | 54.93 |
| 6 | 7 | Hamish MILNE-SKILLMAN | 16 | Millfield | 55.20 |
| 7 | 8 | Ben HARRISON | 16 | Mt Kelly | 56.31 |
| 8 | 9 | Kye ADAMS | 16 | Co Bristol | 56.35 |
| 9 | 10 | William DAVIES | 16 | Swindon Dolp | 56.58 |