EVENT 507 Mens Open 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 3 | 2 | Brandon Chan | 96 | Harrogate | 26.36 |
| 4 | 4 | Liam Doonan | 96 | Co Cambridge | 26.24 |
| 5 | 3 | Brody Hewison | 98 | Io Man | 26.32 |
| 6 | 1 | Conor Munn | 95 | Irl-Ulster | 26.37 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 6 | Toby Seriki | 96 | Beckenham | 26.19 |
| 2 | 8 | Calum Ferguson | 96 | Woking | 26.16 |
| 3 | 10 | George Emmins | 97 | Rushmoor Ryl | 26.12 |
| 4 | 12 | Zak Dawson | 96 | Derwentside | 26.02 |
| 5 | 11 | Luke Greenbank | 97 | Cockermouth | 26.11 |
| 6 | 9 | Kevin Wallbank | 96 | Derventio | 26.12 |
| 7 | 7 | Oliver Maltby | 97 | Modernians | 26.17 |
| 8 | 5 | Adam Toone | 96 | Co Manch Aq | 26.24 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 16 | Thomas Gibbs | 97 | Bolton Metro | 25.61 |
| 2 | 22 | William Condron | 95 | Portsmouth N | 25.13 |
| 3 | 28 | Brendan Hyland | 94 | IRL | 24.66 |
| 4 | 34 | Adam Barrett | 92 | Loughboro Un | 23.98 |
| 5 | 31 | Warren Cannon | 94 | Bath Univ | 24.21 |
| 6 | 25 | Leo Jaggs | 94 | Loughboro Un | 24.89 |
| 7 | 19 | Michael Gunning | 94 | Stockport Mo | 25.34 |
| 8 | 13 | Oliver Smith | 96 | Cockermouth | 25.99 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 17 | Josh Bradley | 93 | Halesowen | 25.49 |
| 2 | 23 | Daniel Jones | 93 | Plymouth Lea | 25.10 |
| 3 | 29 | Adam Taylor | 96 | Co Sund'land | 24.62 |
| 4 | 35 | Antony James | 89 | Plymouth Lea | 23.90 |
| 5 | 32 | Sam Horrocks | 94 | Co Manch Aq | 24.19 |
| 6 | 26 | Kane Haggett | 92 | Derventio | 24.77 |
| 7 | 20 | Masai Zebechaka | 79 | Devonport | 25.32 |
| 8 | 14 | Thomas Fannon | 98 | Plymouth Lea | 25.91 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 18 | Stephen Renwick | 90 | Loughboro Un | 25.47 |
| 2 | 24 | Daniel Briggs | 93 | Co Manch Aq | 25.09 |
| 3 | 30 | Benjamin Lowe | 94 | Millfield | 24.61 |
| 4 | 36 | Benjamin Proud | 94 | Plymouth Lea | 23.10 |
| 5 | 33 | Daniel Steen Andersen | 95 | Denmark | 24.06 |
| 6 | 27 | Sean Campsie | 94 | Warrender Ba | 24.72 |
| 7 | 21 | Shaun Muscroft | 96 | Co Manch Aq | 25.14 |
| 8 | 15 | Suleman Butt | 97 | Aberdeen | 25.67 |