| B Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 2 | Reuben Visda | 15 | Co Sheffield | 55.76 |
| 2 | 3 | Ryan Reader | 20 | Derventio | 55.69 |
| 3 | 4 | Benjamin Staig | 19 | Loughboro Un | 55.59 |
| 4 | 5 | Thomas Gilroy | 22 | Pioneer 79 | 55.33 |
| 5 | 6 | Harry Noble | 17 | Mt Kelly | 55.44 |
| 6 | 7 | Samuel Perks | 16 | Plymouth Lea | 55.64 |
| 7 | 8 | Nicholas Skelton | 15 | Co Oxford | 55.71 |