EVENT 119 Boys 12/13 Yrs 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 2 | Henry Bramwell-Reeks | 12 | Dorset | 1:10.78 |
| 1 | 4 | Jan Salcedo | 13 | Herts | 1:09.29 |
| 2 | 6 | Harry Maishman | 13 | Ox & N Bucks | 1:08.79 |
| 3 | 8 | Marc Elrick | 13 | Scot West | 1:08.24 |
| 4 | 10 | Harry Fox | 13 | Essex | 1:07.42 |
| 5 | 9 | Robert Hegarty | 13 | Surrey | 1:08.16 |
| 6 | 7 | Joseph Hurst | 13 | Derbyshire | 1:08.53 |
| 7 | 5 | Dylan Arzoni | 12 | Cheshire | 1:09.20 |
| 8 | 3 | Joshua Veale | 12 | Staffs | 1:10.17 |
| 9 | 1 | Aiden Crombie | 13 | N & Durham | 1:11.42 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 12 | James McFadzen | 13 | Berks&SBucks | 1:06.75 |
| 1 | 14 | Jamie Sharpley | 13 | Lancashire | 1:06.20 |
| 2 | 16 | Michael Jacobs | 13 | Kent | 1:05.55 |
| 3 | 18 | Alex Pollard | 13 | Yorkshire | 1:02.30 |
| 4 | 20 | Henry Chesterman | 13 | Middlesex | 1:01.70 |
| 5 | 19 | Matthew Anderson | 13 | Notts | 1:02.20 |
| 6 | 17 | Craig McLean | 13 | Scot East | 1:02.50 |
| 7 | 15 | Brodie Williams | 13 | Somerset | 1:06.09 |
| 8 | 13 | Luke Herbert | 13 | Hampshire | 1:06.28 |
| 9 | 11 | Cameron Arnott | 13 | Scot North | 1:07.29 |