EVENT 206 Female 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Eva SYLVESTER | 13 | Co Leeds | 1:14.15 |
| 3 | 3 | Amelie STEPHENS | 13 | Co Birm'ham | 1:13.75 |
| 4 | 5 | Matilda STOKES | 14 | Co Peterboro | 1:13.50 |
| 5 | 4 | Megan BARNICOAT | 14 | Co Peterboro | 1:13.70 |
| 6 | 2 | Sophia AZIZ | 13 | Co Peterboro | 1:14.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 7 | Georgia ALCOCK | 14 | Co Liverpool | 1:13.10 |
| 1 | 9 | Jessica HEATON | 13 | York City | 1:12.41 |
| 2 | 11 | Isabel POADE | 14 | Co Birm'ham | 1:12.01 |
| 3 | 13 | Sophie BARR | 12 | Prescot | 1:11.52 |
| 4 | 15 | Imogen HOWITT | 13 | Bassetlaw SS | 1:10.50 |
| 5 | 14 | Kitty LAMB | 14 | Co Peterboro | 1:10.90 |
| 6 | 12 | Arianna OSHINOWO | 12 | Co Leeds | 1:11.87 |
| 7 | 10 | Emilia ROBERTON | 14 | York City | 1:12.03 |
| 8 | 8 | Erin BENTLEY | 14 | Co Leeds | 1:12.99 |
| 9 | 6 | Paige BAGSHAW | 14 | Nova Cent'n | 1:13.20 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 17 | M AZANA-BALL | 14 | Co Leeds | 1:10.02 |
| 1 | 19 | Isla CLARKE | 14 | Rotherham Mo | 1:09.99 |
| 2 | 21 | Hannah LEE | 17 | Wigan BEST | 1:09.74 |
| 3 | 23 | Mia TRAVIS-JONES | 15 | Co Leeds | 1:09.70 |
| 4 | 25 | Amit MALTZ | 15 | Harrogate | 1:09.30 |
| 5 | 24 | Mia ROBINSON | 14 | Southport | 1:09.68 |
| 6 | 22 | Georgia LEE | 20 | Bo Barnsley | 1:09.70 |
| 7 | 20 | Charlotte JENKINSON | 15 | Co Peterboro | 1:09.90 |
| 8 | 18 | Anna MASON | 13 | Co Peterboro | 1:10.00 |
| 9 | 16 | Addison CROPPER | 12 | Co Leeds | 1:10.19 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 27 | Isabelle EDWARDS | 16 | Newcastle St | 1:09.20 |
| 1 | 29 | Grace TALBOT | 16 | Leamington | 1:08.82 |
| 2 | 31 | Raya HARRAND | 17 | York City | 1:08.78 |
| 3 | 33 | Megan WEST | 17 | Nuneaton | 1:08.65 |
| 4 | 35 | Ruby BYRNE | 17 | Co Bradford | 1:08.30 |
| 5 | 34 | Emilia LESLIE | 17 | Stockport Mo | 1:08.30 |
| 6 | 32 | Rebecca HILL | 15 | Co Birm'ham | 1:08.70 |
| 7 | 30 | Emmie HORWELL | 17 | York City | 1:08.80 |
| 8 | 28 | Annabelle HART | 16 | Harrogate | 1:09.10 |
| 9 | 26 | Martha MANSON | 13 | Nova Cent'n | 1:09.29 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 39 | Peiqi WU | 16 | Stockport Mo | 1:08.10 |
| 1 | 45 | Florence DIXON | 14 | Co Leeds | 1:07.41 |
| 2 | 51 | Samantha TAYLOR | 14 | York City | 1:06.92 |
| 3 | 58 | Phoebe WEATHERILL | 15 | Donc Dartes | 1:05.72 |
| 4 | 64 | Sadie HUNTER | 17 | Co Peterboro | 1:04.30 |
| 5 | 61 | Amelia WRIGHT | 15 | Harrogate | 1:05.29 |
| 6 | 55 | Elizabeth DIXON | 16 | Co Leeds | 1:06.35 |
| 7 | 48 | Laura TUAN-MU | 15 | Co Birm'ham | 1:07.37 |
| 8 | 42 | Kyra WINTER | 14 | Chesterfield | 1:07.90 |
| 9 | 36 | Lois WARD | 14 | Nuneaton | 1:08.20 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 40 | Sophia SUGDEN | 15 | Co Manch Aq | 1:08.06 |
| 1 | 46 | Darcey BLACKER | 17 | Co Leeds | 1:07.40 |
| 2 | 53 | Henrietta CHICK | 16 | Co Manch Aq | 1:06.55 |
| 3 | 59 | Jasmine SHAY | 17 | Co Bradford | 1:05.62 |
| 4 | 65 | Lily O'NEILL | 17 | Stockport Mo | 1:04.14 |
| 5 | 62 | Aleksandra MOSKWA | 17 | Stockport Mo | 1:04.76 |
| 6 | 56 | Megan DONOVAN | 18 | Co Peterboro | 1:06.09 |
| 7 | 49 | Zoey ROGERS | 15 | Trafford Met | 1:07.20 |
| 8 | 43 | Ciara CUST | 18 | Conwy | 1:07.70 |
| 9 | 37 | Rebecca SMITH | 22 | AJ Newcastle | 1:08.10 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 41 | Charlotte SOULSBY | 15 | Newcastle | 1:08.03 |
| 1 | 47 | Zoe SAYERS | 18 | Leamington | 1:07.40 |
| 2 | 54 | Isla HEATHCOTE | 16 | Co Sheffield | 1:06.43 |
| 3 | 60 | Olivia ANSTEY | 17 | Louth | 1:05.50 |
| 4 | 66 | Lara TURNER | 20 | AJ Newcastle | 1:03.20 |
| 5 | 63 | Isabel FARMER | 19 | Bo Kirklees | 1:04.45 |
| 6 | 57 | Ella FAULKNER | 16 | Stockport Mo | 1:05.77 |
| 7 | 50 | Katherine NOBLE | 17 | Newcastle | 1:07.03 |
| 8 | 44 | Ava CONNELL | 16 | Co Leeds | 1:07.50 |
| 9 | 38 | Lauren COX | 16 | Newcastle St | 1:08.10 |