EVENT 603 Female 200m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Amelia WESTON | 12 | Flitwick | |
| 4 | 3 | Isabelle AKINBADE | 9 | Bletchley | |
| 5 | 2 | Lara REDDINGTON | 10 | Harpenden | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 6 | Emma BATTERSBY | 10 | Team Luton | |
| 3 | 8 | Emma WOOD | 10 | Team Luton | |
| 4 | 11 | Kotryna SAKALAUSKAITE | 10 | Epping For't | 4:29.78 |
| 5 | 9 | Daniella FALCO | 10 | Broomfield | 5:05.00 |
| 6 | 7 | Dorothy GOODA | 10 | Team Luton | |
| 7 | 4 | Elsie HUNTER | 13 | Flitwick | |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | Amelie TITOT | 12 | Epping For't | 4:21.78 |
| 2 | 15 | Annie FINNERTY | 12 | Linslade | 4:15.14 |
| 3 | 17 | Florence GILL | 10 | Epping For't | 4:11.15 |
| 4 | 19 | Elizabeth PARTON | 12 | Linslade | 4:04.70 |
| 5 | 18 | Jiali JIAO | 9 | Epping For't | 4:10.32 |
| 6 | 16 | Amelie MURRAY | 11 | Epping For't | 4:11.25 |
| 7 | 14 | Millie HAGLAND | 11 | Biggleswade | 4:19.30 |
| 8 | 12 | Sara BOUKHTOUCHE | 9 | Ealing | 4:23.20 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | Anna-Maria TOSKOVA | 9 | Epping For't | 3:59.82 |
| 2 | 23 | Tilly SCRIVENER | 11 | Team Luton | 3:58.65 |
| 3 | 26 | Eliza BARFORD | 12 | Linslade | 3:53.42 |
| 4 | 28 | Ella THOMAS | 11 | Linslade | 3:50.20 |
| 5 | 27 | Bella STOREY | 10 | Flitwick | 3:51.70 |
| 6 | 25 | Katherine SINKER | 11 | Ealing | 3:57.75 |
| 7 | 22 | Olivia DE SOUSA REIS | 10 | Epping For't | 3:59.52 |
| 8 | 20 | Ines BADDI | 13 | Linslade | 4:01.16 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 30 | Ariella BURR | 10 | Biggleswade | 3:45.01 |
| 2 | 32 | Elsie COLE | 11 | Epping For't | 3:42.75 |
| 3 | 34 | Thea SLATER | 13 | Team Luton | 3:39.98 |
| 4 | 36 | Sophie LAPUCHA | 11 | Team Luton | 3:36.43 |
| 5 | 35 | Elizabeth STOCKS | 12 | Linslade | 3:37.32 |
| 6 | 33 | Zuzanna WALASZEK | 11 | Team Luton | 3:41.97 |
| 7 | 31 | Siao-Siao GUO | 13 | Broomfield | 3:45.00 |
| 8 | 29 | Carla GARCIA-RONCERO | 10 | Ealing | 3:46.00 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 38 | Niamh TUSON | 11 | Epping For't | 3:35.64 |
| 2 | 40 | Anna SEMIGINOVSKA | 10 | Bo Southend | 3:33.45 |
| 3 | 42 | Katherine TOLAND | 11 | Flitwick | 3:32.89 |
| 4 | 44 | Ella KOLOBIUS | 12 | Team Luton | 3:31.34 |
| 5 | 43 | Catherine NEWIS | 12 | Biggleswade | 3:32.62 |
| 6 | 41 | Kaylyn SAMPONG | 14 | Team Luton | 3:33.41 |
| 7 | 39 | Lola SAMUELS | 11 | Linslade | 3:35.30 |
| 8 | 37 | Tia ELSEY | 11 | Linslade | 3:36.00 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 46 | Anais SHEIKH | 12 | Ealing | 3:25.56 |
| 2 | 48 | Coco WRIGHT | 12 | Ealing | 3:24.12 |
| 3 | 50 | Zara BELNIKOFF | 13 | Epping For't | 3:22.85 |
| 4 | 52 | Fia BURR | 14 | Biggleswade | 3:17.90 |
| 5 | 51 | Monika CHUDZIK | 18 | Ealing | 3:20.63 |
| 6 | 49 | Cassie BONNER | 10 | Epping For't | 3:23.34 |
| 7 | 47 | Keira Rose BOUQUET | 11 | Ealing | 3:25.52 |
| 8 | 45 | Chloe FIRTH | 13 | Epping For't | 3:27.93 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 54 | Morrigan COOPER | 12 | Bo Southend | 3:14.80 |
| 2 | 58 | Leoni BHATT | 14 | Broomfield | 3:04.50 |
| 3 | 61 | Eliza JENNINGS | 13 | Biggleswade | 2:59.50 |
| 4 | 63 | Isabel WHITE | 15 | Biggleswade | 2:45.43 |
| 5 | 62 | Ella FANNING | 13 | Flitwick | 2:56.83 |
| 6 | 59 | Saxon SWANN | 13 | Corby | 3:00.36 |
| 7 | 56 | Amber TIGHT | 14 | Flitwick | 3:09.98 |
| 8 | 53 | Lucy ALEXANDER | 15 | Harpenden | 3:15.43 |