EVENT 302 Womens MC 100m Backstroke NAT - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 2 | 2 | Ellie Spokes | 03 | S6 | Northampton | 2:11.14 |
| 3 | 4 | Laura Pilkington | 97 | S6 | Broxburn | 1:56.59 |
| 4 | 6 | Olivia Pickering | 00 | S8 | Gloucester | 1:49.30 |
| 5 | 5 | Miki Lin-Gao | 05 | S8 | Co Cambridge | 1:50.73 |
| 6 | 3 | Isla Howe | 02 | S7 | Nova Cent'n | 1:56.84 |
| 7 | 1 | Charlotte McGuinness | 01 | S6 | Harrogate | 2:19.80 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 10 | Samantha Lewis | 92 | S9 | Satellite | 1:45.21 |
| 1 | 16 | Rachael Partington | 05 | S10 | Co Manch Aq | 1:42.03 |
| 2 | 22 | Madeleine Harris | 03 | S9 | Elmbridge | 1:37.48 |
| 3 | 28 | Seren Leconte | 04 | S9 | RCT Squad | 1:29.69 |
| 4 | 34 | Harriet Dickinson | 97 | S10 | Gloucester | 1:19.01 |
| 5 | 31 | Rachel Tweedie | 98 | S14 | Marple | 1:24.78 |
| 6 | 25 | Maya Brisco | 00 | S9 | Staines | 1:29.99 |
| 7 | 19 | Erin Swann | 01 | S10 | Bellshill | 1:40.92 |
| 8 | 13 | Fabienne Andre | 96 | S8 | Mid Sussex | 1:42.83 |
| 9 | 7 | Georgia Howell | 02 | S6 | Littleh'pton | 1:47.95 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 11 | Eva French | 07 | S10 | Nuneaton | 1:43.46 |
| 1 | 17 | Ellen Stephenson | 04 | S14 | Newcastle | 1:41.99 |
| 2 | 23 | Hollie Pinder | 02 | S9 | Donc Dartes | 1:37.26 |
| 3 | 29 | Fern Ioannou | 03 | S14 | Wycombe Dist | 1:28.43 |
| 4 | 35 | Megan Neave | 03 | S14 | Co Derby | 1:15.74 |
| 5 | 32 | Drew Stables | 02 | S10 | Cockermouth | 1:22.19 |
| 6 | 26 | Abigail Daly | 05 | S14 | Devonport | 1:29.98 |
| 7 | 20 | Katherine Healey | 99 | S12 | Bletchley | 1:40.75 |
| 8 | 14 | Leah O'Connell | 02 | S7 | Camden Swiss | 1:42.72 |
| 9 | 8 | Genevieve Hunter | 02 | S8 | Beachfield | 1:47.39 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 12 | Eliza Humphrey | 05 | S12 | Northampton | 1:43.00 |
| 1 | 18 | Isabel Dean | 04 | S10 | Leic Peng | 1:41.60 |
| 2 | 24 | Ella Cooper-Holmes | 00 | S7 | Cockermouth | 1:34.31 |
| 3 | 30 | Amy Macfarlane | 93 | S14 | Motherwell W | 1:28.38 |
| 4 | 36 | Brock Whiston | 96 | S10 | Bark & Dagen | 1:15.04 |
| 5 | 33 | Cerys Venters-Scott | 02 | S14 | Carnegie | 1:20.71 |
| 6 | 27 | Porsha Jones | 02 | S10 | Shrewsbury | 1:29.80 |
| 7 | 21 | Meghan Willis | 07 | S9 | Torfaen D | 1:39.95 |
| 8 | 15 | Scarlett Humphrey | 05 | S12 | Northampton | 1:42.70 |
| 9 | 9 | Charlotte Hyde | 02 | S7 | Camden Swiss | 1:46.52 |