EVENT 304 Female 200m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Monika BOSAS | 10 | Team Luton | |
| 3 | 4 | Lottie RYAN | 9 | Linslade | |
| 4 | 8 | Grace FAHEY | 9 | Berkhamsted | 4:21.06 |
| 5 | 5 | Beatrice WATSON | 11 | West Suffolk | |
| 6 | 3 | Phoebe YOUNG | 10 | Linslade | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Shayaan MAYANJA | 10 | Team Luton | 3:51.53 |
| 2 | 12 | Martha MELLORS | 12 | Verulam | 3:46.54 |
| 3 | 14 | Isabelle HOWARD | 12 | West Suffolk | 3:45.42 |
| 4 | 16 | Zuzanna WALASZEK | 12 | Team Luton | 3:41.60 |
| 5 | 15 | Ella PLUMB | 11 | West Suffolk | 3:42.47 |
| 6 | 13 | Ines BADDI | 13 | Linslade | 3:46.09 |
| 7 | 11 | Eliza BARFORD | 12 | Linslade | 3:46.72 |
| 8 | 9 | Ava-Lily STEVENS | 12 | St Ives | 4:04.81 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 37 | Ffion FORDYCE | 10 | Berkhamsted | 3:37.44 |
| 2 | 20 | Sophie LAPUCHA | 11 | Team Luton | 3:35.90 |
| 3 | 22 | Libby FLITTON | 12 | Dunstable | 3:28.51 |
| 4 | 27 | Emilia LITTLECHILD | 13 | Berkhamsted | 3:24.57 |
| 5 | 25 | Harriet COX | 14 | Linslade | 3:26.57 |
| 6 | 21 | Chloe MATTHEWS | 13 | Linslade | 3:33.35 |
| 7 | 18 | Thea SLATER | 13 | Team Luton | 3:36.60 |
| 8 | 17 | Dorothy GOODA | 11 | Team Luton | 3:41.10 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 30 | Lily MARGOT | 16 | St Ives | 3:21.18 |
| 2 | 32 | Annabelle MARGOT | 13 | St Ives | 3:19.94 |
| 3 | 34 | Sophie THACKRAH | 15 | Linslade | 3:00.00 |
| 4 | 36 | Elizabeth WRIGHT | 18 | West Suffolk | 2:39.91 |
| 5 | 35 | Abigail PERRY | 14 | Dunstable | 2:59.50 |
| 6 | 33 | Poppy BERKOVITCH | 13 | Enfield Sq | 3:06.25 |
| 7 | 31 | Zofia WOJTACHNIO | 13 | Bletchley | 3:21.10 |
| 8 | 28 | Katie BISCOE | 13 | Team Luton | 3:23.85 |