EVENT 304 Womens MC 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 2 | Elizabeth Foster | 15 | S7 | Havant & Wat | 7:19.37 |
| 1 | 6 | Anna Evans | 31 | S12 | Orion | 6:58.76 |
| 2 | 10 | Eva French | 12 | S10 | Nuneaton | 6:39.37 |
| 3 | 14 | G Cooper-Holmes | 19 | S7 | Cockermouth | 6:15.09 |
| 4 | 18 | Eleanor Bamber | 23 | S10 | Oldham Aqua | 5:50.65 |
| 5 | 16 | Rachael Partington | 14 | S10 | Co Manch Aq | 6:06.94 |
| 6 | 12 | Samantha Lewis | 27 | S8 | Satellite | 6:34.72 |
| 7 | 8 | Georgia Howell | 17 | S7 | Littleh'pton | 6:45.90 |
| 8 | 4 | Scarlett Humphrey | 14 | S11 | Northampton | 7:10.59 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 3 | Ella Williams | 12 | S13 | Swindon Dolp | 7:19.15 |
| 1 | 7 | Fern Sneddon | 13 | S6 | RTW Monson | 6:55.36 |
| 2 | 11 | Genevieve Hunter | 17 | S8 | Tonbridge | 6:39.29 |
| 3 | 15 | Madeleine Harris | 16 | S9 | Elmbridge | 6:13.73 |
| 4 | 19 | Aliya Bacakoglu | 15 | S9 | Bo Kirklees | 5:44.64 |
| 5 | 17 | Amber Haycock | 12 | S10 | Rushden | 6:04.23 |
| 6 | 13 | Emily-Jane Surgeoner | 12 | S9 | Orion | 6:20.41 |
| 7 | 9 | Eliza Humphrey | 14 | S11 | Northampton | 6:39.89 |
| 8 | 5 | Rebecca Franks | 22 | S9 | Lincoln Vulc | 7:10.17 |
| 9 | 1 | Ellie Spokes | 16 | S6 | Nova Cent'n | 8:39.76 |