EVENT 112 Boys 14/15 Yrs 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 2 | Luke Derivan | 15 | Notts | 1:11.09 |
| 1 | 4 | Matthew Debenham | 15 | Suffolk | 1:10.43 |
| 2 | 6 | Vadim Bosc | 14 | Lancashire | 1:09.28 |
| 3 | 8 | Harrison Jarvis | 15 | Essex | 1:09.23 |
| 4 | 10 | Samuel Brookes | 15 | Derbyshire | 1:08.11 |
| 5 | 9 | David Eddy | 15 | Berks&SBucks | 1:09.06 |
| 6 | 7 | Finn Bremner | 15 | Scot East | 1:09.25 |
| 7 | 5 | Callum Minshull | 15 | Swim Wales E | 1:09.77 |
| 8 | 3 | Christopher Finch | 15 | Surrey | 1:10.53 |
| 9 | 1 | Frankie Docking-Smith | 15 | Cheshire | 1:11.98 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 12 | Sam Cornish | 15 | Middlesex | 1:07.44 |
| 1 | 14 | Ryan Zhao | 15 | N & Durham | 1:07.07 |
| 2 | 16 | Rafe Dobson | 15 | Ox & N Bucks | 1:06.29 |
| 3 | 18 | George Smith | 15 | Shropshire | 1:05.53 |
| 4 | 20 | Cameron Williams | 15 | Devon | 1:03.12 |
| 5 | 19 | Harvey Freeman | 15 | Northants | 1:04.61 |
| 6 | 17 | Dimitrios Tsaliagkos | 15 | Somerset | 1:05.90 |
| 7 | 15 | Matthew Garrity | 15 | Scot West | 1:06.79 |
| 8 | 13 | Jacob Hudson | 15 | Kent | 1:07.34 |
| 9 | 11 | B Howarth-Osborne | 15 | Yorkshire | 1:07.60 |