EVENT 203 Female MC 09 /Over 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Emilia THORNLEY-PAYNE | 16 | Boston | |
| 4 | 2 | Ana BASCARAU | 12 | Boston | |
| 5 | 3 | Ruby NISBET | 10 | Grantham | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Annabel HILLSON | 9 | Grantham | 1:45.25 |
| 2 | 5 | Olivia CHARITY | 12 | Grantham | 1:41.86 |
| 3 | 6 | Madeline SURTEES | 12 | Grantham | 1:40.32 |
| 4 | 7 | Taliyah MALLETT | 9 | Boston | 1:39.59 |
| 5 | 8 | Isabella TRAGNI | 12 | Co Lincoln P | 1:36.63 |
| 6 | 9 | Hollie-Anne CROOK | 10 | Grantham | 1:36.01 |
| 7 | 10 | Juliette KIM | 10 | Grantham | 1:34.70 |
| 8 | 11 | Millie MACKIE | 11 | Co Lincoln P | 1:32.68 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Katie BEASTALL | 11 | Co Lincoln P | 1:32.67 |
| 2 | 13 | Imogen ROTHWELL | 13 | Co Lincoln P | 1:32.22 |
| 3 | 14 | Catherine SINCLAIR | 12 | Co Lincoln P | 1:32.08 |
| 4 | 15 | Eva MADDISON | 10 | Co Lincoln P | 1:29.60 |
| 5 | 16 | Isla ROBINSON | 11 | Co Lincoln P | 1:27.20 |
| 6 | 17 | Mia PARAPIJONAVICIUTE | 16 | Grantham | 1:26.63 |
| 7 | 18 | Janna SCHUERCH | 14 | Co Lincoln P | 1:25.99 |
| 8 | 19 | Poppy HATHWAY | 13 | Grantham | 1:25.46 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 20 | Isabel MAY | 15 | Co Lincoln P | 1:24.10 |
| 2 | 21 | Isobel DELDERFIELD | 11 | Co Lincoln P | 1:23.61 |
| 3 | 22 | Florence MONAGHAN | 13 | Lincoln TSA | 1:22.44 |
| 4 | 23 | Eliza MULHOLLAND | 13 | Lincoln TSA | 1:21.68 |
| 5 | 24 | Emma ARTHUR | 16 | Co Lincoln P | 1:19.31 |
| 6 | 25 | Connie MILLNS | 12 | Co Lincoln P | 1:19.13 |
| 7 | 26 | Lucy ABBOTT | 13 | Grantham | 1:18.89 |
| 8 | 27 | Lexie SHEWAN | 14 | Grantham | 1:18.63 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 29 | Ellena HOWITT | 13 | Grantham | 1:16.32 |
| 2 | 31 | Darcey WOOD | 13 | Grantham | 1:14.90 |
| 3 | 33 | Isobel ALLSOP | 15 | Grantham | 1:12.05 |
| 4 | 35 | Alexandra BULAT | 18 | Co Lincoln P | 1:05.25 |
| 5 | 34 | Lucy WILLATTS | 13 | Grantham | 1:11.77 |
| 6 | 32 | Lexie HAMILTON | 15 | South Lincs | 1:12.94 |
| 7 | 30 | Erin ARCHER | 14 | Co Lincoln P | 1:15.63 |
| 8 | 28 | Lizzy LERESCHE HANDS | 13 | Grantham | 1:17.34 |