EVENT 208 Womens Open 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 1 | Jo Hobsley | 13 | Barnet Copt | 1:09.10 |
| 3 | 3 | Olivia Lee | 13 | Chalfont | 1:08.94 |
| 4 | 5 | Hermione Roe | 12 | Co Bradford | 1:08.43 |
| 5 | 4 | Libby Harris | 13 | Leatherhead | 1:08.75 |
| 6 | 2 | Lydia Parker | 13 | Hamble Aq | 1:08.97 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 7 | Skye McLaughlin | 13 | TauntonDeane | 1:08.35 |
| 1 | 9 | Olivia Katory | 13 | Newcastle | 1:08.24 |
| 2 | 11 | Tamryn Van Selm | 13 | Bromley | 1:07.99 |
| 3 | 13 | Evie Thompson | 14 | Team Mercia | 1:07.81 |
| 4 | 15 | Abbie Christopherson | 14 | Winsford | 1:07.75 |
| 5 | 14 | Alexia Jackson | 14 | Bromley | 1:07.78 |
| 6 | 12 | Ella Bainbridge | 13 | Cleethorpes | 1:07.85 |
| 7 | 10 | Sophia Soteriou | 13 | Soundwell | 1:08.22 |
| 8 | 8 | Samantha Tan | 13 | Barnet Copt | 1:08.29 |
| 9 | 6 | Clara Von Opel | 13 | Chelsea&West | 1:08.38 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 17 | Kate Baxter | 14 | Soton Dolp | 1:07.67 |
| 1 | 19 | Olivia Butler | 14 | Co Bristol | 1:07.57 |
| 2 | 21 | Lily Merrett | 14 | Hoddesdon | 1:07.52 |
| 3 | 23 | Abigail Stemp | 14 | Woking | 1:07.49 |
| 4 | 25 | Leia King | 14 | Stockport Mo | 1:07.35 |
| 5 | 24 | Faye Francis | 14 | Winchester | 1:07.46 |
| 6 | 22 | Sacha Thomas | 14 | UEA Norwich | 1:07.51 |
| 7 | 20 | Beth Gibbons | 14 | York City | 1:07.57 |
| 8 | 18 | Asma Parker | 14 | Colchester | 1:07.66 |
| 9 | 16 | Rhiannon Evans | 13 | Millfield | 1:07.71 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 27 | Freya Colbert | 13 | Grantham | 1:07.32 |
| 1 | 29 | Mia Greenough | 14 | Wigan BEST | 1:07.20 |
| 2 | 31 | Emily Chapman | 13 | Dinnaton | 1:07.17 |
| 3 | 33 | Oriana Noel | 13 | Plymouth Lea | 1:07.15 |
| 4 | 35 | Ella Fisher | 15 | York City | 1:06.95 |
| 5 | 34 | Lauren McConnachie | 15 | Co Coventry | 1:06.99 |
| 6 | 32 | Milly Boulding | 13 | Bo Kirklees | 1:07.16 |
| 7 | 30 | Chiara Tommasello | 13 | Co Manch Aq | 1:07.19 |
| 8 | 28 | Ellie Vowell | 14 | Sevenoaks | 1:07.30 |
| 9 | 26 | Annabel Smith | 14 | Bromley | 1:07.33 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 37 | Gemma Elliott | 15 | Havant & Wat | 1:06.83 |
| 1 | 39 | Ruby Palmer | 15 | Co Leeds | 1:06.72 |
| 2 | 41 | Imogen Meers | 15 | Bromley | 1:06.60 |
| 3 | 43 | Hollie Steer | 15 | Dinnaton | 1:06.56 |
| 4 | 45 | Lucy Drinkall | 16 | Woking | 1:06.39 |
| 5 | 44 | Michaela Stephen | 15 | Co Derby | 1:06.50 |
| 6 | 42 | Amy Corcoran | 15 | KingstonHull | 1:06.59 |
| 7 | 40 | Erin Donnelly | 14 | Bo Stockton | 1:06.64 |
| 8 | 38 | Caitlin Bradford | 14 | Wirral Metro | 1:06.75 |
| 9 | 36 | Maisie Thornton | 14 | Hailsham | 1:06.86 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 49 | Tiana Porter | 15 | Co Oxford | 1:06.28 |
| 1 | 55 | Sarah Wright | 15 | Gates &Whick | 1:06.03 |
| 2 | 61 | Viktoria Gnandt | 16 | Co Leeds | 1:05.73 |
| 3 | 67 | Abigail Burr | 19 | Lincoln Vulc | 1:04.60 |
| 4 | 73 | Bailie Harrison | 17 | Deepings | 1:03.96 |
| 5 | 70 | Milly Scotchbrook | 17 | Co Leicester | 1:04.44 |
| 6 | 64 | Hannah Trowsdale | 16 | Loftus Dol | 1:05.05 |
| 7 | 58 | Elise Collins | 15 | Chesterfield | 1:05.83 |
| 8 | 52 | Emily Ford | 15 | Co Oxford | 1:06.11 |
| 9 | 46 | Lily Parsons | 16 | Plymouth Lea | 1:06.37 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 50 | Abagael Walmsley | 15 | Ellesmere Co | 1:06.14 |
| 1 | 56 | Victoria Adams | 15 | Plymouth Lea | 1:06.00 |
| 2 | 62 | Summer Kennedy | 16 | Derventio | 1:05.24 |
| 3 | 68 | Kate Mills | 19 | Co Oxford | 1:04.59 |
| 4 | 74 | Jane Brown | 17 | Newcastle | 1:03.94 |
| 5 | 71 | Ciara Walsh | 17 | Guildford Ct | 1:04.40 |
| 6 | 65 | Neola Thorpe | 16 | York City | 1:05.04 |
| 7 | 59 | Ellie Tennant | 16 | Eckington | 1:05.82 |
| 8 | 53 | Charlyne Lebosse | 15 | Basingstoke | 1:06.07 |
| 9 | 47 | Jessica McDonough | 15 | Ellesmere Co | 1:06.30 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 51 | Olivia Norman | 15 | Colchester | 1:06.11 |
| 1 | 57 | Katie Hirst | 16 | Co Sheffield | 1:05.97 |
| 2 | 63 | Emily Haimes | 16 | Enfield Sq | 1:05.23 |
| 3 | 69 | Rhianna Bennett | 20 | Co Manch Aq | 1:04.53 |
| 4 | 75 | Charlotte Taylor | 20 | Satellite | 1:03.86 |
| 5 | 72 | Elinor Duley | 17 | Colchester | 1:04.22 |
| 6 | 66 | Poppy Richardson | 16 | Co Peterboro | 1:04.79 |
| 7 | 60 | Kelsie Geary | 16 | Derventio | 1:05.82 |
| 8 | 54 | Lauren Brantley | 15 | Camden Swiss | 1:06.04 |
| 9 | 48 | Zara Leleux | 16 | Wrekin Coll | 1:06.30 |