EVENT 127 Boys 14/15 Yrs 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 2 | Max Davies | 14 | Notts | 1:03.82 |
| 1 | 4 | Kaden Edwards | 15 | Swim Wales E | 1:02.73 |
| 2 | 6 | William Parsons | 15 | Suffolk | 1:01.90 |
| 3 | 8 | Jake Kirkham | 15 | Scot West | 1:00.55 |
| 4 | 10 | Pietro Ubertalli | 15 | Middlesex | 59.97 |
| 5 | 9 | James Pennington | 15 | Cheshire | 1:00.45 |
| 6 | 7 | Finley Bunhejee | 14 | Derbyshire | 1:01.10 |
| 7 | 5 | Jude Hills | 14 | Essex | 1:02.17 |
| 8 | 3 | Sam Glass | 15 | Scot East | 1:02.83 |
| 9 | 1 | Andrew Jones | 15 | Shropshire | 1:05.17 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 12 | Kaleb Fox-Jones | 15 | Berks&SBucks | 59.69 |
| 1 | 14 | Archie Evans | 15 | Northants | 58.92 |
| 2 | 16 | Harry Nicholson | 15 | N & Durham | 58.74 |
| 3 | 18 | Hendrik Van Der Leest | 15 | Surrey | 58.62 |
| 4 | 20 | Toby Hill | 15 | Lancashire | 58.26 |
| 5 | 19 | David O'Loughlin | 15 | Somerset | 58.53 |
| 6 | 17 | Hubert Gdaniec | 15 | Devon | 58.71 |
| 7 | 15 | Louis Hayes | 15 | Kent | 58.89 |
| 8 | 13 | Ellis Stephenson | 15 | Ox & N Bucks | 58.99 |
| 9 | 11 | Matthew Woodhall | 15 | Yorkshire | 59.74 |