EVENT 403 Female MC 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 3 | 1 | Virag Csenge Janza | 14 | S10 | HUNGARY | |
| 4 | 2 | Callie-Ann Warrington | 24 | S10 | GBR - RTWS | |
| 5 | 3 | N Van Der Linden | 17 | S14 | NAMIBIA | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 4 | Siena Oxby | 17 | S14 | GBR - STMN | |
| 2 | 5 | Caitlin Trevor | 21 | S14 | Kingston Roy | 2:00.47 |
| 3 | 6 | Genevieve Hunter | 22 | S8 | Mid Sussex | 1:53.51 |
| 4 | 7 | Ida Corcoran | 15 | S9 | Flitwick | 1:41.94 |
| 5 | 8 | Emma Imrie | 17 | S10 | Sth Ayrshire | 1:38.97 |
| 6 | 9 | Katie Pake | 16 | S10 | Carnegie | 1:34.02 |
| 7 | 10 | Mwaba Mkwasa | 19 | S8 | Norwich Swan | 1:33.97 |
| 8 | 11 | Isabella Haynes | 16 | S9 | S Bournem'th | 1:33.63 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 14 | Ella Williams | 17 | S13 | Swindon | 1:25.43 |
| 1 | 12 | Rebecca Hardy-Bishop | 24 | S12 | Jersey | 1:28.01 |
| 2 | 13 | Ela Letton-Jones | 18 | S12 | GBR - SGPY | 1:26.38 |
| 3 | 15 | Tylia Glynn | 18 | S14 | Stockport Mo | 1:24.70 |
| 4 | 16 | Mira Jeanne Maack | 20 | S8 | GERMANY | 1:23.92 |
| 5 | 17 | Amber Van Der Kruk | 23 | S14 | NETHERLANDS | 1:22.78 |
| 6 | 18 | Evie Lambert | 17 | S9 | Bo Kirklees | 1:21.92 |
| 7 | 19 | Amber Haycock | 17 | S10 | GBR - NHNA | 1:20.12 |
| 8 | 20 | Suzie Pellis | 17 | S9 | NETHERLANDS | 1:19.71 |
| 9 | 21 | Chiara Fellone | 17 | S14 | Co Salford | 1:19.63 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 22 | Imogen Dodds | 15 | S13 | Wellingboro | 1:19.34 |
| 1 | 23 | Meghan Willis | 17 | S9 | GBR - TDOY | 1:16.60 |
| 2 | 24 | Katarina Roxon | 31 | S9 | CANADA | 1:14.51 |
| 3 | 25 | Brock Whiston | 28 | S8 | GBR - BACL | 1:14.31 |
| 4 | 26 | Saskia Webb | 17 | S14 | GBR - HAVY | 1:12.13 |
| 5 | 27 | Pernilla Lindberg | 30 | S14 | SWEDEN | 1:11.79 |
| 6 | 28 | Eva Coronado Tejeda | 25 | S14 | SPAIN | 1:09.90 |
| 7 | 29 | Grace Robinson | 17 | S14 | Co Manch Aq | 1:09.72 |
| 8 | 30 | Taylor Winnett | 25 | S10 | USA | 1:09.35 |
| 9 | 31 | Angela Marina | 25 | S14 | CANADA | 1:09.17 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 32 | Georgia Sheffield | 19 | S14 | GBR - BTMN | 1:08.75 |
| 1 | 33 | Florianne Bultje | 26 | S9 | NETHERLANDS | 1:08.33 |
| 2 | 34 | Toni Shaw | 21 | S9 | GBR - NUAX | 1:07.83 |
| 3 | 35 | Sarai Gascon | 32 | S9 | SPAIN | 1:07.61 |
| 4 | 36 | Lisa Kruger | 24 | S10 | NETHERLANDS | 1:07.55 |
| 5 | 37 | Aira Kinoshita | 18 | S14 | JAPAN | 1:06.43 |
| 6 | 38 | Faye Rogers | 22 | S10 | GBR - NUAX | 1:05.48 |
| 7 | 39 | Louise Fiddes | 23 | S14 | GBR - HATT | 1:05.47 |
| 8 | 40 | Poppy Maskill | 19 | S14 | GBR - ALSN | 1:05.04 |
| 9 | 41 | Yui Lam Chan | 21 | S14 | HONG KONG | 1:04.04 |