| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Charlie Humphries | 18 | Co Sheffield | 52.50 |
| 1 | 2 | Thomas Flower | 18 | RichmondDale | 51.99 |
| 2 | 3 | Max McCusker | 18 | Millfield | 51.81 |
| 3 | 4 | Louis Barker | 18 | Millfield | 51.53 |
| 4 | 5 | Scott McLay | 18 | Perth City | 51.06 |
| 5 | 6 | Daniel Savage | 17 | Northampton | 51.20 |
| 6 | 7 | Lewis Kerrod | 17 | Co Leicester | 51.62 |
| 7 | 8 | Harry Constantine | 17 | Hatfield | 51.91 |
| 8 | 9 | William Cole | 18 | Co Bristol | 52.32 |
| 9 | 10 | Samuel Crabtree | 18 | Thanet Swim | 52.62 |