EVENT 612 Female 16 /Over 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 2 | 2 | Scarlet Cummins | 17 | | Wellingboro | 1:43.59 |
| 3 | 4 | Sophia Meulle | 16 | | Daventry | 1:39.90 |
| 4 | 6 | Amy Anderson | 16 | | Corby | 1:36.76 |
| 5 | 5 | Hallie McAlindon | 17 | | Kettering | 1:37.30 |
| 6 | 3 | Ella Fairbairn | 16 | | Kettering | 1:41.24 |
| 7 | 1 | Rose Webb | 17 | SB6 | Northampton | 1:56.20 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 10 | Imogen Burger | 16 | | Corby | 1:34.40 |
| 2 | 16 | Lucy Dando | 20 | | Corby | 1:28.40 |
| 3 | 22 | Evelyn Coppa | 16 | | Corby | 1:25.50 |
| 4 | 28 | Charlotte Jarman | 18 | | Rushden | 1:18.20 |
| 5 | 25 | Alice Berrill | 18 | | Daventry | 1:22.83 |
| 6 | 19 | Amy Vaughan | 40 | | Northampton | 1:27.60 |
| 7 | 13 | Frankie Lamont | 17 | | Kettering | 1:30.70 |
| 8 | 7 | Millie Day | 18 | | Rushden | 1:36.70 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 11 | Jasmine Reynolds | 16 | | Rushden | 1:33.30 |
| 2 | 17 | Imogen Dodds | 17 | SB13 | Wellingboro | 1:28.29 |
| 3 | 23 | Grace Grindrod | 18 | | Northampton | 1:25.36 |
| 4 | 29 | Grace Wingham | 19 | | Corby | 1:17.73 |
| 5 | 26 | Ruby Cummins | 21 | | Wellingboro | 1:22.70 |
| 6 | 20 | Evie Reamsbottom | 16 | | Daventry | 1:27.20 |
| 7 | 14 | Georgia Smith | 17 | | Corby | 1:29.50 |
| 8 | 8 | Olivia Hajo | 16 | | Corby | 1:35.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 12 | Imogen Howes | 19 | | Northampton | 1:32.40 |
| 2 | 18 | Lana Giles | 19 | | Kettering | 1:27.60 |
| 3 | 24 | Claire Lera | 43 | | Rushden | 1:25.26 |
| 4 | 30 | Alice Wallinger | 16 | | Wellingboro | 1:15.50 |
| 5 | 27 | Alexa Parker | 17 | | Corby | 1:20.40 |
| 6 | 21 | Kaia Dawson | 16 | | Corby | 1:27.00 |
| 7 | 15 | Maya Bovingdon | 17 | | Northampton | 1:29.30 |
| 8 | 9 | Nika Buhharova | 16 | | Corby | 1:34.60 |