EVENT 203 Womens MC 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 3 | 1 | Hannelore Vens | 90 | S7 | Belgium | 8:02.14 |
| 4 | 2 | Maria Kyriakidou | 03 | S7 | Greece | 7:46.67 |
| 5 | 3 | Scarlett Humphrey | 05 | S11 | NHNA - GBR | 7:20.19 |
| 6 | 4 | Elizabeth Foster | 04 | S7 | Havant & Wat | 7:09.60 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 5 | Hannah Grace | 98 | S7 | Ireland | 7:07.67 |
| 1 | 6 | Rachel Agar | 06 | S9 | Bark & Dagen | 7:03.94 |
| 2 | 7 | Fern Sneddon | 06 | S6 | RTW Monson | 7:00.79 |
| 3 | 8 | Anna Evans | 88 | S12 | Orion | 6:57.48 |
| 4 | 9 | Katherina Roesler | 01 | S7 | Germany | 6:48.09 |
| 5 | 10 | Eliza Humphrey | 05 | S11 | NHNA - GBR | 6:46.70 |
| 6 | 11 | Genevieve Hunter | 02 | S8 | Kent Weald | 6:43.50 |
| 7 | 12 | Rebecca Franks | 97 | S9 | VULA - GBR | 6:42.78 |
| 8 | 13 | Eva French | 07 | S10 | Nuneaton | 6:37.01 |
| 9 | 14 | Georgia Howell | 02 | S7 | Littleh'pton | 6:35.85 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 15 | Kate Bolan | 04 | S12 | Livingston | 6:32.33 |
| 1 | 16 | Samantha Lewis | 92 | S8 | Satellite | 6:29.64 |
| 2 | 17 | Meghan Willis | 07 | S9 | Torfaen D | 6:29.26 |
| 3 | 18 | Olivia Pickering | 00 | S8 | Gloucester | 6:25.44 |
| 4 | 19 | Emily-Jane Surgeoner | 07 | S9 | Orion | 6:22.38 |
| 5 | 20 | Ida Andersson Wulf | 98 | S7 | Sweden | 6:22.21 |
| 6 | 21 | Shelby Newkirk | 96 | S6 | Canada | 6:17.65 |
| 7 | 22 | Ayaallah Tewfick | 00 | S6 | Egypt | 6:13.07 |
| 8 | 23 | Madeleine Harris | 03 | S9 | Elmbridge | 6:08.54 |
| 9 | 24 | Amber Haycock | 07 | S10 | Rushden | 6:07.75 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 25 | Thelma Bjornsdottir | 96 | S6 | Iceland | 5:58.59 |
| 1 | 26 | N St Clair Maitland | 03 | S7 | Sweden | 5:58.37 |
| 2 | 27 | Porsha Jones | 02 | S10 | Shrewsbury | 5:57.20 |
| 3 | 28 | Agnes Kramer | 98 | S7 | Sweden | 5:53.32 |
| 4 | 29 | Rachael Partington | 05 | S10 | Co Manch Aq | 5:50.49 |
| 5 | 30 | Charlotte Hyde | 02 | S7 | Camden Swiss | 5:49.05 |
| 6 | 31 | Erin Swann | 01 | S10 | Motherwell W | 5:48.61 |
| 7 | 32 | Mikuni Utsugi | 03 | S9 | Japan | 5:47.97 |
| 8 | 33 | Eleanor Bamber | 96 | S10 | Man & NW Dis | 5:47.85 |
| 9 | 34 | Seren Leconte | 04 | S9 | RCT Squad | 5:44.10 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 35 | Ying Liu | 99 | S9 | China | 5:40.00 |
| 1 | 36 | Liwen Cai | 98 | S11 | China | 5:33.14 |
| 2 | 37 | Cara Smyth | 01 | S10 | ECEX - GBR | 5:30.10 |
| 3 | 38 | Xinyi Wang | 03 | S11 | China | 5:28.71 |
| 4 | 39 | Beth Johnston | 01 | S10 | EGAX - GBR | 5:27.52 |
| 5 | 40 | Jessika Markkanen | 99 | S9 | Finland | 5:27.49 |
| 6 | 41 | Jenna Rajahalme | 02 | S10 | Finland | 5:27.47 |
| 7 | 42 | Maisie Summers-Newton | 02 | S6 | NHNA - GBR | 5:26.97 |
| 8 | 43 | Eleanor Simmonds | 94 | S6 | CSCL - GBR | 5:26.20 |
| 9 | 44 | Rebecca Lewis | 03 | S10 | RCTY - GBR | 5:20.07 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 45 | Katie Crowhurst | 04 | S13 | WYCS - GBR | 5:16.96 |
| 1 | 46 | Vendula Duskova | 98 | S8 | Czech Rep | 5:16.84 |
| 2 | 47 | Camilla Luscri | 02 | S13 | Italy | 5:14.83 |
| 3 | 48 | Harriet Dickinson | 97 | S10 | Gloucester | 5:13.49 |
| 4 | 49 | Susana Veiga | 00 | S9 | Portugal | 5:07.79 |
| 5 | 50 | Alani Ferreira | 98 | S13 | South Africa | 5:06.99 |
| 6 | 51 | Marlene Endrolath | 01 | S13 | Germany | 5:04.51 |
| 7 | 52 | Neele Labudda | 03 | S12 | Germany | 5:04.50 |
| 8 | 53 | Amy Marren | 98 | S9 | Ireland | 5:02.07 |
| 9 | 54 | Hannah Aspden | 00 | S9 | USA | 5:01.73 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 55 | Chantalle Zijderveld | 00 | S10 | Netherlands | 5:00.05 |
| 1 | 56 | Abby Kane | 03 | S13 | WNAX - GBR | 4:59.83 |
| 2 | 57 | Ayano Tsujiuchi | 96 | S13 | Japan | 4:52.71 |
| 3 | 58 | Alice Tai | 99 | S8 | EALL - GBR | 4:51.97 |
| 4 | 59 | Stephanie Millward | 81 | S9 | CORW - GBR | 4:51.11 |
| 5 | 60 | Mikaela Jenkins | 03 | S10 | USA | 4:50.94 |
| 6 | 61 | Zara Mullooly | 02 | S10 | GUIS - GBR | 4:42.64 |
| 7 | 62 | Toni Shaw | 03 | S9 | NCOX - GBR | 4:42.43 |
| 8 | 63 | Oliwia Jablonska | 97 | S10 | Poland | 4:32.83 |
| 9 | 64 | Aurelie Rivard | 96 | S10 | Canada | 4:29.27 |