EVENT 305 Womens Open 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 2 | 1 | Freya Stevens | 01 | Northampton | 9:31.78 |
| 3 | 3 | Maddison Saunders | 01 | Co Peterboro | 9:29.05 |
| 4 | 5 | Jessica Podger | 01 | Co Bristol | 9:26.95 |
| 5 | 4 | Madeleine Hoare | 02 | Co Coventry | 9:28.47 |
| 6 | 2 | Tiegan Child | 02 | Beckenham | 9:30.33 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 7 | Sophie Smith | 01 | St Thomas | 9:26.12 |
| 2 | 9 | Jemima Hall | 01 | Hillingdon | 9:24.12 |
| 3 | 11 | Alaina Ward | 01 | Havant & Wat | 9:22.89 |
| 4 | 13 | Niamh Hofland | 02 | Royal Wolv | 9:13.17 |
| 5 | 12 | Leah Crisp | 01 | Co Leeds | 9:16.16 |
| 6 | 10 | Alisha Hawkins | 01 | Winsford | 9:23.45 |
| 7 | 8 | Kiera Henley | 01 | Stockport Mo | 9:24.67 |
| 8 | 6 | Summer Kennedy | 01 | Nova Cent'n | 9:26.20 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 15 | Maisie Macartney | 01 | Thanet Swim | 9:09.05 |
| 2 | 17 | Rose Foden | 99 | Northampton | 9:08.19 |
| 3 | 19 | Kate Macphee | 99 | Newcastle | 9:07.06 |
| 4 | 21 | Loulou Vos | 99 | Hillingdon | 9:06.45 |
| 5 | 20 | Sarah Branch | 00 | Northampton | 9:06.65 |
| 6 | 18 | Caitlin Fearon | 00 | Sevenoaks | 9:08.15 |
| 7 | 16 | Elizabeth Harris | 00 | Stockport Mo | 9:08.80 |
| 8 | 14 | Annalea Davison | 01 | Newcastle | 9:12.96 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 23 | Tazmin Pugh | 00 | Ellesmere Co | 8:59.95 |
| 2 | 25 | Jessie Westnidge | 97 | Co Sheffield | 8:51.78 |
| 3 | 27 | Georgia Darwent | 98 | Newcastle | 8:50.79 |
| 4 | 29 | Lauren Walton | 95 | Loughboro Un | 8:47.54 |
| 5 | 28 | Isobel Griffiths | 99 | Co Birm'ham | 8:49.28 |
| 6 | 26 | Abigail Humphreys | 98 | Co Coventry | 8:51.29 |
| 7 | 24 | Sophie Evans | 99 | Swansea Aq | 8:59.56 |
| 8 | 22 | Phoebe Griffiths | 00 | Bo Waltham F | 9:03.12 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 31 | Alice Dearing | 97 | Royal Wolv | 8:41.92 |
| 2 | 33 | Aisha Thornton | 91 | Loughboro Un | 8:36.80 |
| 3 | 35 | Camilla Hattersley | 95 | Co Glasgow | 8:33.83 |
| 4 | 37 | Jazmin Carlin | 90 | Bath Univ | 8:15.54 |
| 5 | 36 | Jessica Thielmann | 93 | Derwentside | 8:29.73 |
| 6 | 34 | Danielle Huskisson | 93 | UniOfStirl | 8:35.99 |
| 7 | 32 | Holly Hibbott | 99 | Stockport Mo | 8:41.39 |
| 8 | 30 | Chloe Finch | 98 | Co Birm'ham | 8:46.95 |