| B Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Oliver FITT | 14 | St Ives | 34.67 |
| 2 | 2 | Ryan SYKES | 17 | West Norfolk | 34.56 |
| 3 | 3 | Ethan LAMB | 17 | Hatfield | 34.05 |
| 4 | 4 | Joshua GRAY | 19 | West Norfolk | 33.29 |
| 5 | 5 | James NARENGIAN | 16 | Hoddesdon | 33.58 |
| 6 | 6 | Thomas ARKLE | 17 | St Felix Sch | 34.06 |
| 7 | 7 | Jack MCGARRY | 19 | Leighton Buz | 34.64 |
| 8 | 8 | Hugo DOCKERTY | 15 | Braintree | 34.69 |