EVENT 603 Womens Open 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 2 | Kayleigh Parker | 00 | Yeovil | 1:03.61 |
| 2 | 4 | Anna Pang | 99 | Guildford Ct | 1:03.48 |
| 3 | 6 | Tara Haworth | 99 | Lincoln Vulc | 1:03.11 |
| 4 | 8 | Jane Brown | 00 | Newcastle | 1:02.88 |
| 5 | 7 | Lauren Hodgson | 99 | Newcastle | 1:02.91 |
| 6 | 5 | Spencer Williams | 00 | Brompton | 1:03.32 |
| 7 | 3 | Emma Harvey | 01 | Millfield | 1:03.49 |
| 8 | 1 | Holly Hildrew | 99 | Romford Town | 1:03.64 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 10 | Niamh Robinson | 99 | Pioneer 79 | 1:02.62 |
| 2 | 12 | Alex Reddington | 99 | Highland USA | 1:02.42 |
| 3 | 14 | Amy Bell | 00 | Co Sheffield | 1:02.28 |
| 4 | 16 | Orla Dyer | 99 | Co Sheffield | 1:01.93 |
| 5 | 15 | Keanna Macinnes | 01 | Heart Of Mid | 1:02.12 |
| 6 | 13 | Evan King | 99 | Weston S M | 1:02.34 |
| 7 | 11 | Ciara Schlosshan | 01 | Co Leeds | 1:02.52 |
| 8 | 9 | Anna Fleming | 00 | Co Glasgow | 1:02.87 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 18 | Caitlin Hubbard | 01 | Co Birm'ham | 1:01.85 |
| 2 | 20 | Emily Large | 01 | Newcastle | 1:01.80 |
| 3 | 22 | Anna Newlands | 98 | Stockport Mo | 1:01.77 |
| 4 | 24 | Harriet West | 97 | Loughboro Un | 1:01.61 |
| 5 | 23 | Emma Gage | 89 | Stockport Mo | 1:01.68 |
| 6 | 21 | Fiona Hardie | 94 | Poole | 1:01.78 |
| 7 | 19 | Kirsty Simpson | 96 | Co Aberdeen | 1:01.83 |
| 8 | 17 | Eve White | 99 | Dumfries | 1:01.85 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 28 | Brearnna Close | 97 | Stockport Mo | 1:01.39 |
| 2 | 34 | Holly Hibbott | 99 | Stockport Mo | 1:00.98 |
| 3 | 40 | Charlotte Atkinson | 96 | Loughboro Un | 1:00.13 |
| 4 | 46 | Siobhan-Marie O'Connor | 95 | Bath Univ | 58.37 |
| 5 | 43 | Sophie Smith | 94 | Loughboro Un | 59.88 |
| 6 | 37 | Tain Bruce | 98 | Edinburgh Un | 1:00.45 |
| 7 | 31 | Emily Jones | 95 | Edinburgh Un | 1:01.13 |
| 8 | 25 | Georgina Pryor | 98 | Harlow Pen | 1:01.58 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 29 | Lily West | 97 | Bath Univ | 1:01.31 |
| 2 | 35 | Emma Day | 97 | Loughboro Un | 1:00.72 |
| 3 | 41 | Amelia Clynes | 99 | Co Leeds | 1:00.09 |
| 4 | 47 | Jemma Lowe | 90 | Bath Univ | 58.07 |
| 5 | 44 | Laura Stephens | 99 | Plymouth Lea | 59.38 |
| 6 | 38 | Tazmin Pugh | 00 | Ellesmere Co | 1:00.33 |
| 7 | 32 | Abbie Wood | 99 | Loughboro Un | 1:01.08 |
| 8 | 26 | Stephanie Blakeburn | 94 | Billingham | 1:01.52 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 30 | Emma Smithurst | 91 | Co Manch Aq | 1:01.29 |
| 2 | 36 | Raquel Matos | 96 | Edinburgh Un | 1:00.61 |
| 3 | 42 | Ellen Thomas | 94 | Guildford Ct | 1:00.03 |
| 4 | 48 | Rachael Kelly | 94 | Loughboro Un | 57.71 |
| 5 | 45 | Alys Thomas | 90 | Swansea Aq | 59.12 |
| 6 | 39 | Elena Sheridan | 95 | Romford Town | 1:00.20 |
| 7 | 33 | Harriet Jones | 97 | Co Cardiff | 1:01.08 |
| 8 | 27 | Candice Hall | 97 | Co Leicester | 1:01.48 |