| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Harry WYNNE-JONES | 12 | Co Milton K | : . |
| 1 | 2 | Solomon WILLIAMS | 12 | Wycombe Dist | : . |
| 2 | 3 | Oliver CONWAY | 12 | Co Oxford | : . |
| 3 | 4 | Lewis COTTAM | 12 | Stockport Mo | : . |
| 4 | 5 | Mackenzie RUSSELL | 12 | Guildford Ct | : . |
| 5 | 6 | Magnus KELLY | 12 | Millfield | : . |
| 6 | 7 | Sam ELLIS | 12 | Plymouth Lea | : . |
| 7 | 8 | Joshua O'BRIEN | 12 | Co Cardiff | : . |
| 8 | 9 | Aidan PILCHER | 12 | teamipswich | : . |
| 9 | 10 | Sebastian LEE | 11 | Co Derby | : . |