EVENT 305 Womens Open 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 3 | 1 | Georgina Gratton | 99 | Plymouth Lea | 1:06.15 |
| 4 | 3 | Martha Duley | 99 | Colchester | 1:06.01 |
| 5 | 2 | Lauren Hall | 99 | Co Cambridge | 1:06.12 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 2 | 5 | Hannah Kelsall | 99 | Co Liverpool | 1:05.87 |
| 3 | 7 | H Aldous Fountain | 01 | Co Hereford | 1:05.77 |
| 4 | 9 | Tegan Drew | 00 | Plymouth Lea | 1:05.31 |
| 5 | 8 | Freya Rayner | 98 | Co Sund'land | 1:05.33 |
| 6 | 6 | Georgina Pryor | 98 | Hoddesdon | 1:05.87 |
| 7 | 4 | Savanna Jemmett | 98 | RTW Monson | 1:05.99 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 13 | Laura Stephens | 99 | Plymouth Lea | 1:04.24 |
| 2 | 19 | Kathryn Willis | 92 | Loughboro Un | 1:03.72 |
| 3 | 25 | Rachel Williams | 93 | Bath Univ | 1:02.50 |
| 4 | 31 | Elizabeth Simmonds | 91 | Bath Univ | 1:00.09 |
| 5 | 28 | Natasha Hofton | 95 | Nova Cent'n | 1:01.97 |
| 6 | 22 | Rebecca Cole | 94 | Loughboro Un | 1:03.02 |
| 7 | 16 | Shauntelle Austin | 97 | Blackpool Aq | 1:04.18 |
| 8 | 10 | Anna Maine | 00 | Woking | 1:05.29 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 14 | Danielle Baker | 98 | Plymouth Lea | 1:04.23 |
| 2 | 20 | Jessica Lloyd | 95 | Co Manch Aq | 1:03.42 |
| 3 | 26 | Siobhan-Marie O'Connor | 95 | Bath Univ | 1:02.35 |
| 4 | 32 | Lauren Quigley | 95 | Stockport Mo | 1:00.01 |
| 5 | 29 | Rachel Lefley | 90 | Co Manch Aq | 1:01.22 |
| 6 | 23 | Stephanie Reynolds | 95 | Kelly Coll | 1:02.70 |
| 7 | 17 | Eleanor Baldwin | 99 | Co Derby | 1:04.13 |
| 8 | 11 | Kathryn Greenslade | 98 | Preston | 1:04.96 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 15 | Megan Briggs | 97 | Warrender Ba | 1:04.19 |
| 2 | 21 | Sarah Bro | 96 | Denmark | 1:03.40 |
| 3 | 27 | Ekaterina Avramova | 91 | Ealing | 1:02.11 |
| 4 | 33 | Georgia Davies | 90 | Loughboro Un | 59.78 |
| 5 | 30 | Jessica Fullalove | 96 | Co Manch Aq | 1:00.48 |
| 6 | 24 | Eliza Duffy | 97 | Plymouth Lea | 1:02.54 |
| 7 | 18 | Charlotte Evans | 97 | Co Milton K | 1:03.76 |
| 8 | 12 | Isobel Thwaite | 98 | Wirral Metro | 1:04.82 |