EVENT 127 Boys 14/15 Yrs 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 2 | Daniel Gencas | 15 | Essex | 1:03.42 |
| 1 | 4 | Finan Close | 15 | Swim Wales W | 1:02.44 |
| 2 | 6 | Adam Murray | 15 | Swim Wales E | 1:02.26 |
| 3 | 8 | Archie Evans | 14 | Northants | 1:01.64 |
| 4 | 10 | Ellis Cleworth | 14 | Lancashire | 1:00.99 |
| 5 | 9 | Brogan Hyde | 15 | Berks&SBucks | 1:01.62 |
| 6 | 7 | Sonny Chamberlain-Hyde | 15 | Dorset | 1:02.00 |
| 7 | 5 | Luca De Zilva | 15 | Leics | 1:02.28 |
| 8 | 3 | Joshua Aspinall | 15 | Scot East | 1:03.16 |
| 9 | 1 | Seb Vandermeer | 15 | Cambs | 1:06.60 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 12 | Louis Hayes | 14 | Kent | 1:00.71 |
| 1 | 14 | James Hart | 14 | Devon | 1:00.58 |
| 2 | 16 | Ryan Zhao | 14 | N & Durham | 59.85 |
| 3 | 18 | Reuben Visda | 15 | Yorkshire | 58.55 |
| 4 | 20 | Nicholas Skelton | 15 | Ox & N Bucks | 57.92 |
| 5 | 19 | Mark Ford | 15 | Scot West | 58.30 |
| 6 | 17 | Dillon Chana | 15 | Middlesex | 59.14 |
| 7 | 15 | Finn Jeffery | 15 | Suffolk | 1:00.24 |
| 8 | 13 | Matthew Hall | 14 | Somerset | 1:00.61 |
| 9 | 11 | Hendrik Van Der Leest | 14 | Surrey | 1:00.74 |