EVENT 303 Mixed 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Izzy CHOULES | 11 | Northall'ton | |
| 2 | 2 | Lucas CHUNG | 9 | Northall'ton | |
| 3 | 3 | Zoe HANSON | 10 | Northall'ton | 2:14.60 |
| 4 | 4 | Toby BAILEY | 10 | Northall'ton | 2:00.80 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Sofia CRYER-ANDERSON | 10 | Loftus Dol | 1:56.59 |
| 2 | 6 | Poppy WHITELEY | 10 | Northall'ton | 1:53.72 |
| 3 | 7 | Arthur ROSE | 8 | Loftus Dol | 1:43.00 |
| 4 | 8 | Matthew MARGRETT | 12 | Northall'ton | 1:41.55 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Nathan LOFTHOUSE | 11 | Northall'ton | 1:32.40 |
| 2 | 10 | Alexandra HANSON | 12 | Northall'ton | 1:30.52 |
| 3 | 11 | Eleanor HALLIDAY | 13 | Northall'ton | 1:30.36 |
| 4 | 12 | Finley WHITELEY | 13 | Northall'ton | 1:26.90 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Dylan BOWERS | 13 | Northall'ton | 1:19.88 |
| 2 | 16 | Maisie MORRIS | 16 | Northall'ton | 1:09.21 |
| 3 | 15 | Jaicob SAUNDERS | 16 | Northall'ton | 1:14.10 |
| 4 | 13 | Isabelle SMITH | 13 | Northall'ton | 1:26.26 |