EVENT 208 Women's MC 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 1 | Grace Harvey | 26 | S6 | Hoddesdon | 1:29.36 |
| 2 | 2 | Eliza Humphrey | 19 | S11 | Northampton | 1:28.60 |
| 3 | 3 | Scarlett Humphrey | 19 | S11 | Northampton | 1:23.71 |
| 4 | 4 | Lily Rice | 20 | S8 | Pembs Cty | 1:22.19 |
| 5 | 5 | Rebecca Hardy-Bishop | 24 | S12 | Jersey | 1:21.76 |
| 6 | 6 | Ela Letton-Jones | 18 | S12 | NofioGwynedd | 1:20.17 |
| 7 | 7 | Stephanie Booth | 21 | S10 | Bo Kirklees | 1:20.14 |
| 8 | 8 | Meghan Willis | 17 | S9 | Torfaen D | 1:17.78 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 9 | Siena Oxby | 17 | S14 | Stockport Mo | 1:16.47 |
| 1 | 10 | Astrid Carroll | 15 | S12 | Co Sheffield | 1:16.35 |
| 2 | 11 | Amber Haycock | 17 | S10 | Northampton | 1:12.75 |
| 3 | 12 | Alice Tai | 25 | S8 | Ealing | 1:12.11 |
| 4 | 13 | Olivia Newman-Baronius | 18 | S14 | Maxwell | 1:11.46 |
| 5 | 14 | Abby Kane | 21 | S13 | UniOfStirl | 1:11.24 |
| 6 | 15 | Jessica-Jane Applegate | 28 | S14 | Co Norwich | 1:08.98 |
| 7 | 16 | Georgia Sheffield | 19 | S14 | Bolton Metro | 1:08.61 |
| 8 | 17 | Megan Neave | 21 | S14 | Repton | 1:07.88 |
| 9 | 18 | Poppy Maskill | 19 | S14 | Alsager | 1:05.87 |