| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | David ANNIS | 12 | Worcester | : . |
| 1 | 2 | Samuel LANDER | 12 | Bromley | : . |
| 2 | 3 | Nikita MARKOV | 12 | Camden Swiss | : . |
| 3 | 4 | Joseph BOX | 12 | Sevenoaks | : . |
| 4 | 5 | Carwyn JONES | 12 | Co Cardiff | : . |
| 5 | 6 | Liam HAMP | 12 | Thanet Swim | : . |
| 6 | 7 | Josef ADAMS | 11 | Ealing | : . |
| 7 | 8 | Jack COPTCOAT | 12 | Northampton | : . |
| 8 | 9 | Dairhys LECKONBY | 12 | Swansea Aq | : . |
| 9 | 10 | Thomas SIMON | 11 | Co Liverpool | : . |