EVENT 108 Boys 16/17 Yrs 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Joel Clarke | 16 | Norfolk | 1:04.95 |
| 2 | 3 | Bradley Gordon | 16 | Staffs | 1:02.29 |
| 3 | 5 | Nathan Watson | 17 | Cumbria | 1:00.97 |
| 4 | 7 | Leonids Sarigins | 16 | Warwicks | 1:00.56 |
| 5 | 6 | Connor Keeler | 17 | Cornwall | 1:00.97 |
| 6 | 4 | Ryan Larkin | 16 | Worcs | 1:02.10 |
| 7 | 2 | Mark Edmundson | 16 | Wiltshire | 1:03.07 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 9 | Brandon Budd-Thomas | 17 | Swim Wales W | 1:00.10 |
| 1 | 11 | Thomas Lewis | 17 | Lincolnshire | 59.58 |
| 2 | 13 | Jack Smith | 16 | Gloucs | 58.62 |
| 3 | 15 | Sam Phippen | 17 | Berks&SBucks | 57.29 |
| 4 | 17 | Joseph Small | 17 | Shropshire | 55.54 |
| 5 | 16 | Jamie Scholes | 17 | Cambs | 56.10 |
| 6 | 14 | Matthew Richmond | 17 | Northants | 58.13 |
| 7 | 12 | Harry Constantine | 17 | Bedfordshire | 58.80 |
| 8 | 10 | Daniel Chada | 16 | Herts | 59.64 |
| 9 | 8 | Harrison Fern | 17 | Derbyshire | 1:00.33 |