EVENT 504 Womens Open 50m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 2 | Lydia Smith | 15 | Gainsborough | 32.33 |
| 4 | 4 | Lottie James | 13 | AbingdonVale | 31.37 |
| 5 | 3 | Alina Willis | 15 | Newcastle | 31.04 |
| 6 | 1 | Kate Butler | 15 | Stockport Mo | 31.29 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 6 | Maisie Easter | 15 | Co Norwich | 31.58 |
| 1 | 8 | Olivia Norman | 15 | Colchester | 32.07 |
| 2 | 10 | Emily Ford | 15 | Co Oxford | 30.62 |
| 3 | 12 | Jocelyn Cosmatos | 15 | Leatherhead | 31.11 |
| 4 | 14 | Charley Jones | 15 | Royal Wolv | 31.51 |
| 5 | 13 | Honey Osrin | 14 | Plymouth Lea | 30.26 |
| 6 | 11 | Sophie Shaw | 15 | Mid Sussex | 30.33 |
| 7 | 9 | Mia Carter | 15 | Bishop Stort | 30.64 |
| 8 | 7 | Anna Podurgiel | 15 | Camden Swiss | 31.25 |
| 9 | 5 | Mollie-Jo Garratt | 13 | York City | 30.91 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 18 | Turaya Evans | 14 | Carn Brea | 30.81 |
| 1 | 24 | Ceara Barber | 15 | Wycombe Dist | 30.87 |
| 2 | 30 | Tegan Drew | 17 | Plymouth Lea | 29.92 |
| 3 | 36 | Chloe Golding | 19 | Co Manch Aq | 30.01 |
| 4 | 42 | Lauren Quigley | 22 | Co Liverpool | 29.21 |
| 5 | 39 | Lily Boseley | 16 | Co Sheffield | 29.75 |
| 6 | 33 | Pia Murray | 15 | Ellesmere Co | 30.04 |
| 7 | 27 | Daisy Platts | 17 | Co Leicester | 30.03 |
| 8 | 21 | Zoe Cawsey | 18 | Atlantis | 30.28 |
| 9 | 15 | Heather Witcombe | 15 | Soundwell | 30.48 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 19 | Emily Iley | 13 | Bo Waltham F | 30.63 |
| 1 | 25 | Jessica Shaw | 18 | Birm'ham Uni | 30.04 |
| 2 | 31 | Athena Clayson | 16 | Mt Kelly | 29.96 |
| 3 | 37 | Freya Rayner | 19 | Co Sund'land | DN:C . |
| 4 | 43 | Anna Maine | 17 | Woking | 29.41 |
| 5 | 40 | Mollie Allen | 19 | Loughboro Un | 29.56 |
| 6 | 34 | Phoebe Lenderyou | 22 | Newcastle | 29.17 |
| 7 | 28 | Katelyn Bergin | 16 | Stockport Mo | 30.34 |
| 8 | 22 | Eleanor Mitchell | 17 | Co Derby | 30.71 |
| 9 | 16 | Alysia Maestri | 15 | Bristol Hen | 30.83 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 20 | Aliyah-Mai Webb | 17 | Exeter City | 30.81 |
| 1 | 26 | C Fletcher-Stables | 15 | Northampton | 30.26 |
| 2 | 32 | Imogen Meers | 15 | Bromley | 30.60 |
| 3 | 38 | Emma Day | 20 | Loughboro Un | DN:C . |
| 4 | 44 | Georgia Davies | 27 | Loughboro Un | DN:C . |
| 5 | 41 | Emily Crane | 19 | Loughboro Un | 30.56 |
| 6 | 35 | Martha Duley | 18 | Colchester | 30.06 |
| 7 | 29 | Meghan Maybanks | 17 | DunmowAtlant | 30.18 |
| 8 | 23 | Jane Brown | 17 | Newcastle | 30.86 |
| 9 | 17 | Mimi Morley Iszatt | 14 | Co Oxford | 30.00 |