EVENT 302 Mens MC 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 3 | 1 | Lachlan Macbeth | 23 | S14 | Highland | 1:34.96 |
| 4 | 3 | Benjamin Grainger | 13 | S10 | Io Man | 1:28.26 |
| 5 | 2 | Scott Hadley | 18 | S8 | Orion | 1:31.31 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 4 | Connor Lockwood | 13 | S14 | Woking | 1:28.00 |
| 1 | 6 | Finlay Middleton | 14 | S8 | Mt Kelly | 1:24.78 |
| 2 | 8 | Connor Boyfield | 18 | S9 | Boston | 1:23.42 |
| 3 | 10 | Caleb Grace | 18 | S14 | Littleh'pton | 1:22.56 |
| 4 | 12 | Arthur Morley | 17 | S9 | Winchester | 1:22.20 |
| 5 | 11 | Andrew Keeler | 20 | S14 | Devonport | 1:22.37 |
| 6 | 9 | Matthew Rishworth | 14 | S10 | Staines | 1:23.03 |
| 7 | 7 | Nathan Maillet | 28 | S14 | France | 1:23.75 |
| 8 | 5 | Jack Sheffield | 14 | S14 | Co Salford | 1:25.28 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 16 | Henry Fletcher | 21 | S14 | Gloucester | 1:19.96 |
| 1 | 22 | Ryan Crouch | 22 | S9 | teamipswich | 1:14.33 |
| 2 | 28 | Jon Law | 19 | S13 | Helensburgh | 1:09.24 |
| 3 | 34 | Sam Bramham | 28 | S9 | Australia | 1:06.10 |
| 4 | 40 | James Clegg | 22 | S12 | Edinburgh Un | 1:00.14 |
| 5 | 37 | Jack Bridge | 22 | S10 | Co Sund'land | 1:04.98 |
| 6 | 31 | Callum Pearson | 20 | S10 | Hastings | 1:07.88 |
| 7 | 25 | Craig McNeil | 19 | S10 | SwimTrafford | 1:11.18 |
| 8 | 19 | Aaron Maddox | 19 | S8 | Ealing | 1:16.13 |
| 9 | 13 | Cameron Vearncombe | 14 | S14 | Caradon | 1:21.10 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 17 | Liam Walsh | 17 | S8 | Co Newport | 1:17.62 |
| 1 | 23 | Thomas Brown | 17 | S14 | Burnley BOBC | 1:11.87 |
| 2 | 29 | Jamie Warriner | 17 | S10 | Preston | 1:08.52 |
| 3 | 35 | Craig Harris | 17 | S14 | Swindon Dolp | 1:05.95 |
| 4 | 41 | Kahoru Harazawa | 19 | S10 | Beckenham | 59.85 |
| 5 | 38 | Sean Russo | 25 | S13 | Australia | 1:01.20 |
| 6 | 32 | Andreas Onea | 24 | S8 | Austria | 1:07.50 |
| 7 | 26 | Sol Bressat | 21 | S14 | Jersey | 1:10.76 |
| 8 | 20 | Tom Piggott | 16 | S10 | Shrewsbury | 1:15.16 |
| 9 | 14 | Oludaisi Adefisan | 16 | S9 | Croydon Amph | 1:20.45 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 18 | Liam Spence | 16 | S14 | KingstonHull | 1:16.22 |
| 1 | 24 | Gareth Orr | 23 | S14 | Co Sund'land | 1:11.76 |
| 2 | 30 | Benjamin Foulston | 16 | S10 | Nova Cent'n | 1:08.14 |
| 3 | 36 | Ryan Nicholls | 18 | S14 | Basildon Ph | 1:05.21 |
| 4 | 42 | James Hollis | 22 | S10 | Loughboro Un | 58.71 |
| 5 | 39 | Connah Green | 18 | S14 | Carmarthen | 1:00.54 |
| 6 | 33 | Adam Karas | 15 | S9 | Germany | 1:07.24 |
| 7 | 27 | Matthew Redfern | 18 | S13 | Worcester | 1:10.71 |
| 8 | 21 | Jaxon Simmons | 16 | S13 | Co Peterboro | 1:14.61 |
| 9 | 15 | J Monaghan-Coombs | 18 | S9 | Saxon Crown | 1:20.07 |