| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Alex Twyford | 13 | Bushey | 39.44 |
| 2 | 2 | Nathanial Mapley | 13 | Co St Albans | 39.15 |
| 3 | 3 | Cub Maddison | 13 | Hatfield | 37.86 |
| 4 | 4 | Daniel Holliss | 13 | Co St Albans | 36.91 |
| 5 | 5 | Andrew Tembra | 13 | Hatfield | 37.04 |
| 6 | 6 | Oliver Blight | 13 | Hatfield | 38.53 |
| 7 | 7 | William Buckley | 13 | Watford SC | 39.36 |
| 8 | 8 | Jake Moore | 13 | Potters Bar | 40.55 |