EVENT 504 Womens MC 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 3 | Samantha Lewis | 27 | S8 | Satellite | 1:51.01 |
| 1 | 7 | Eliza Humphrey | 14 | S11 | Northampton | 1:41.25 |
| 2 | 11 | Rachael Partington | 14 | S10 | Co Manch Aq | 1:40.02 |
| 3 | 15 | Ellen Stephenson | 15 | S14 | Newcastle | 1:39.52 |
| 4 | 19 | Amber Haycock | 12 | S10 | Rushden | 1:29.06 |
| 5 | 17 | Erin Boyles | 13 | S14 | Workington | 1:28.00 |
| 6 | 13 | Rebecca Franks | 22 | S9 | Lincoln Vulc | 1:38.01 |
| 7 | 9 | Eva French | 12 | S10 | Nuneaton | 1:42.21 |
| 8 | 5 | Miki Lin-Gao | 14 | S8 | Co Cambridge | 1:43.66 |
| 9 | 1 | Ellie Spokes | 16 | S6 | Nova Cent'n | 2:16.23 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 4 | Georgia Howell | 17 | S7 | Littleh'pton | 1:52.18 |
| 1 | 8 | Emily-Jane Surgeoner | 12 | S9 | Orion | 1:39.24 |
| 2 | 12 | Madeleine Harris | 16 | S9 | Elmbridge | 1:42.08 |
| 3 | 16 | Abigail Daly | 14 | S14 | Devonport | 1:32.55 |
| 4 | 20 | Fern Ioannou | 16 | S14 | Wycombe Dist | 1:27.82 |
| 5 | 18 | Eleanor Bamber | 23 | S10 | Oldham Aqua | 1:34.01 |
| 6 | 14 | G Cooper-Holmes | 19 | S7 | Cockermouth | 1:36.94 |
| 7 | 10 | Scarlett Humphrey | 14 | S11 | Northampton | 1:39.49 |
| 8 | 6 | Genevieve Hunter | 17 | S8 | Tonbridge | 1:46.03 |
| 9 | 2 | Evie Lambert | 12 | S9 | Brighouse | 1:54.58 |