| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Alex FARMER | 16 | Worcester | : . |
| 1 | 2 | Felix HASLAM | 18 | Bromley | : . |
| 2 | 3 | Bryce PUSZET | 19 | Camden Swiss | : . |
| 3 | 4 | Henry CHOONG | 17 | Sevenoaks | : . |
| 4 | 5 | Ioan EVANS | 16 | Co Cardiff | : . |
| 5 | 6 | Max JAMESON | 18 | Thanet Swim | : . |
| 6 | 7 | Jahrel MURPHY | 19 | Ealing | : . |
| 7 | 8 | Matthew RICHMOND | 18 | Northampton | : . |
| 8 | 9 | Liam WHITE | 20 | Swansea Aq | : . |
| 9 | 10 | Liam CARLIN | 19 | Co Liverpool | : . |