EVENT 501 Womens Open 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 3 | 1 | Alice Thickett | 02 | Co Sheffield | 4:35.16 |
| 4 | 3 | Georgina Dennis | 02 | Mt Kelly | 4:34.95 |
| 5 | 2 | Maisie Elliott | 03 | Co Leicester | 4:35.09 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 5 | Megan Allison | 02 | Co Newport | 4:34.67 |
| 2 | 7 | Rosie Hepworth | 02 | Bo Kirklees | 4:34.11 |
| 3 | 9 | Alisha Hawkins | 01 | Stockport Mo | 4:33.57 |
| 4 | 11 | Shannon Dalligan | 01 | Ellesmere Co | 4:33.42 |
| 5 | 10 | Charlotte Stevenson | 02 | Bracknell | 4:33.50 |
| 6 | 8 | Lucy Nicholson | 00 | York City | 4:33.58 |
| 7 | 6 | Tia Wilson | 02 | Modernian | 4:34.46 |
| 8 | 4 | Gaurika Singh | 02 | Barnet Copt | 4:34.72 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 13 | Thea O'Keefe | 00 | Poole | 4:33.10 |
| 1 | 15 | Megan Gray | 03 | KingstonHull | 4:32.75 |
| 2 | 17 | Summer Kennedy | 01 | Derventio | 4:32.50 |
| 3 | 19 | Elle Brown | 02 | Chester Le S | 4:32.28 |
| 4 | 21 | Anne Tavierne | 01 | Camden Swiss | 4:32.02 |
| 5 | 20 | Iona Macleod | 03 | Dun City Aqu | 4:32.17 |
| 6 | 18 | Sapphira Gabbani | 03 | Co Sheffield | 4:32.30 |
| 7 | 16 | Esther Halford | 00 | Derventio | 4:32.60 |
| 8 | 14 | Alicia Dingle | 02 | Royal Wolv | 4:32.87 |
| 9 | 12 | Molly Francis | 01 | Mt Kelly | 4:33.30 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 23 | Thalia Poaros | 01 | Mt Kelly | 4:31.86 |
| 1 | 25 | Emilia Sansome | 01 | Wycombe Dist | 4:31.54 |
| 2 | 27 | Analise Carver Varela | 00 | Barnet Copt | 4:31.27 |
| 3 | 29 | Chloe Plater | 00 | Co South'ton | 4:30.83 |
| 4 | 31 | Alexandra Bartley | 02 | Co Birm'ham | 4:30.63 |
| 5 | 30 | Elizabeth Boeckman | 00 | Chelsea&West | 4:30.65 |
| 6 | 28 | Laura McNab | 01 | Aquae Sulis | 4:31.09 |
| 7 | 26 | Olivia Butler | 03 | Severnside | 4:31.35 |
| 8 | 24 | Kiera Henley | 01 | Stockport Mo | 4:31.84 |
| 9 | 22 | Megan Davies | 00 | Barnet Copt | 4:31.94 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 33 | Caitlin Fearon | 00 | Sevenoaks | 4:29.91 |
| 1 | 35 | Sarah Branch | 00 | Northampton | 4:29.66 |
| 2 | 37 | Tiegan Child | 02 | Beckenham | 4:29.53 |
| 3 | 39 | Georgia Milton | 00 | Romford Town | 4:29.09 |
| 4 | 41 | Jessica Podger | 01 | Co Bristol | 4:28.87 |
| 5 | 40 | Ellenor Rixon | 00 | Guildford Ct | 4:29.07 |
| 6 | 38 | Olivia Tatton | 00 | Northampton | 4:29.14 |
| 7 | 36 | Hannah Sloan | 00 | Co Cardiff | 4:29.54 |
| 8 | 34 | Sophie Negrine | 03 | Co Birm'ham | 4:29.77 |
| 9 | 32 | Katie Taylor | 00 | Heart Of Mid | 4:30.14 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 43 | Caitlin Mackay | 01 | Wycombe Dist | 4:27.82 |
| 1 | 45 | Michaella Glenister | 02 | Co Leicester | 4:27.21 |
| 2 | 47 | Meghan Byrne | 00 | Barnet Copt | 4:26.98 |
| 3 | 49 | Melanie Hall | 99 | Royal Wolv | 4:26.83 |
| 4 | 51 | Nicole Ryan | 98 | Wycombe Dist | 4:26.73 |
| 5 | 50 | Evan King | 99 | Weston S M | 4:26.76 |
| 6 | 48 | Mollie Wright | 98 | Nova Cent'n | 4:26.97 |
| 7 | 46 | Jemima Hall | 01 | Hillingdon | 4:27.19 |
| 8 | 44 | Anna Smail | 02 | Ellesmere Co | 4:27.80 |
| 9 | 42 | Eva Vicary | 00 | Co Coventry | 4:27.88 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 53 | Laura Boardman | 99 | Co Salford | 4:26.25 |
| 1 | 55 | Sian Martin | 00 | Newcastle | 4:26.16 |
| 2 | 57 | Nikki Miller | 00 | SLanarkshire | 4:24.73 |
| 3 | 59 | Phoebe Griffiths | 00 | Ellesmere Co | 4:24.20 |
| 4 | 61 | Alaina Ward | 01 | Havant & Wat | 4:23.90 |
| 5 | 60 | Sophie Smith | 01 | St Thomas | 4:24.08 |
| 6 | 58 | Amber Keegan | 97 | Co Sheffield | 4:24.65 |
| 7 | 56 | Tia Ward | 03 | Co Leeds | 4:25.05 |
| 8 | 54 | Georgia Wright | 98 | Donc Dartes | 4:26.22 |
| 9 | 52 | Linda Shaw | 97 | Co Leeds | 4:26.44 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 63 | Maisie Macartney | 01 | Thanet Swim | 4:23.40 |
| 1 | 65 | Isobel Jones | 97 | Co Milton K | 4:22.82 |
| 2 | 67 | Loulou Vos | 99 | Hillingdon | 4:22.38 |
| 3 | 69 | Lucy McKenzie | 97 | Stockport Mo | 4:22.13 |
| 4 | 71 | Emily Clarke | 97 | Poole | 4:22.06 |
| 5 | 70 | Chloe Hannam | 96 | Co Peterboro | 4:22.10 |
| 6 | 68 | Chloe Finch | 98 | Co Birm'ham | 4:22.30 |
| 7 | 66 | Tazmin Pugh | 00 | Ellesmere Co | 4:22.48 |
| 8 | 64 | Roisin Ramsay | 01 | Warrender Ba | 4:23.27 |
| 9 | 62 | Niamh Hofland | 02 | Royal Wolv | 4:23.46 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 74 | Jessica Thomson | 99 | Co Aberdeen | 4:21.12 |
| 1 | 78 | Leah Crisp | 01 | Co Leeds | 4:20.25 |
| 2 | 82 | Abbie Houston | 95 | Co Sheffield | 4:18.84 |
| 3 | 86 | Holly Hibbott | 99 | Stockport Mo | 4:15.94 |
| 4 | 90 | Abbie Wood | 99 | Loughboro Un | 4:14.27 |
| 5 | 88 | Kathryn Greenslade | 98 | Preston | 4:14.67 |
| 6 | 84 | Isobel Griffiths | 99 | Co Birm'ham | 4:17.29 |
| 7 | 80 | Georgia Darwent | 98 | Newcastle | 4:19.02 |
| 8 | 76 | Rachel Anderson | 02 | Millfield | 4:20.51 |
| 9 | 72 | Sophie Millen | 99 | Wycombe Dist | 4:21.34 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 75 | Elizabeth Harris | 00 | Stockport Mo | 4:20.83 |
| 1 | 79 | Isobel Grant | 98 | Co Sheffield | 4:19.19 |
| 2 | 83 | Annalea Davison | 01 | Newcastle | 4:18.63 |
| 3 | 87 | Freya Anderson | 01 | Ellesmere Co | 4:14.79 |
| 4 | 91 | Alice Dearing | 97 | Loughboro Un | 4:11.35 |
| 5 | 89 | Georgina Boyle | 98 | Chelsea&West | 4:14.57 |
| 6 | 85 | Lucy Ellis | 97 | Co Sund'land | 4:17.08 |
| 7 | 81 | Maya Westlake | 97 | Co Sheffield | 4:18.93 |
| 8 | 77 | Katie Rennolds | 98 | Burnley BOBC | 4:20.26 |
| 9 | 73 | Abby Smith | 96 | Co Birm'ham | 4:21.30 |