EVENT 305 Mens MC 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 2 | 2 | Jacob Chambers | 03 | S8 | Co Manch Aq | 1:55.02 |
| 3 | 4 | James Watson | 04 | S9 | Harrogate | 1:45.50 |
| 4 | 6 | Liam Hardy | 03 | S14 | Co Manch Aq | 1:40.25 |
| 5 | 5 | Ethan Naisbitt | 03 | S9 | Pioneer 79 | 1:42.63 |
| 6 | 3 | Kian Saville | 00 | S10 | Daventry | 1:51.26 |
| 7 | 1 | Charlie Coulam | 03 | S10 | Bridlington | 1:59.66 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 8 | Adam Donnachie | 00 | S8 | Eastkilbride | 1:34.68 |
| 2 | 10 | Peter Harper | 98 | S14 | Marlborough | 1:28.40 |
| 3 | 12 | Matthew Scott | 99 | S14 | Bridge O Don | 1:26.95 |
| 4 | 14 | George Henshaw | 01 | S9 | BelperMarlin | 1:22.47 |
| 5 | 13 | Samuel Whearty | 02 | S9 | Colchester | 1:25.46 |
| 6 | 11 | Maximilian Tulloch | 05 | S9 | Chalfont | 1:27.99 |
| 7 | 9 | Balthazar Bradshaw | 06 | S10 | Chelsea&West | 1:30.12 |
| 8 | 7 | William Whitehead | 05 | S8 | Rotherham Mo | 1:38.76 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 16 | Scott Hadley | 98 | S8 | Orion | 1:21.06 |
| 2 | 18 | Evan Holt | 03 | S14 | Cockermouth | 1:19.06 |
| 3 | 20 | Caleb Grace | 98 | S14 | Littleh'pton | 1:17.07 |
| 4 | 22 | Benjamin Grainger | 03 | S10 | Mt Kelly | 1:17.02 |
| 5 | 21 | Christopher Currie | 94 | S14 | Co Oxford | 1:17.05 |
| 6 | 19 | Christian Buchanan | 01 | S14 | Musselburgh | 1:18.44 |
| 7 | 17 | Owen Garsides | 01 | S14 | KingstonHull | 1:19.58 |
| 8 | 15 | Luke Batty | 05 | S9 | Bolton Metro | 1:21.09 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 24 | Joshua Fairchild | 98 | S14 | Co Coventry | 1:16.39 |
| 2 | 26 | Adam Roebuck | 00 | S14 | Caradon | 1:14.77 |
| 3 | 28 | Conor Ballard | 02 | S10 | Leatherhead | 1:12.81 |
| 4 | 30 | Andrew Keeler | 96 | S14 | Devonport | 1:11.62 |
| 5 | 29 | Tom Piggott | 00 | S10 | Shrewsbury | 1:12.56 |
| 6 | 27 | Connor Boyfield | 98 | S9 | Boston | 1:12.97 |
| 7 | 25 | Angus Leckonby | 02 | S14 | Scarborough | 1:15.75 |
| 8 | 23 | Kyle Hughes | 01 | S9 | Motherwell W | 1:16.80 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 32 | Oliver Carter | 00 | S10 | Carnegie | 1:10.75 |
| 2 | 34 | Aaron Maddox | 97 | S8 | Swansea Aq | 1:10.07 |
| 3 | 36 | Oludaisi Adefisan | 00 | S9 | Beckenham | 1:09.32 |
| 4 | 38 | Matthew Redfern | 98 | S13 | Worcester | 1:07.46 |
| 5 | 37 | George Kelman-Johns | 01 | S14 | Sborne Storm | 1:09.29 |
| 6 | 35 | Joshua Monaghan-Coombs | 98 | S9 | Bath Univ | 1:09.47 |
| 7 | 33 | Cameron Vearncombe | 02 | S14 | Plymouth Lea | 1:10.46 |
| 8 | 31 | James Edwards | 99 | S14 | Calne Alpha | 1:11.18 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 40 | Sol Bressat | 95 | S14 | TigersJersey | 1:07.12 |
| 2 | 42 | Jon Law | 97 | S13 | Helensburgh | 1:06.31 |
| 3 | 44 | Jack Milne | 01 | S14 | Dun City Aqu | 1:05.22 |
| 4 | 46 | Barry McClements | 01 | S9 | Ireland | 1:03.94 |
| 5 | 45 | Adam Whyborne | 01 | S10 | Billingham | 1:04.39 |
| 6 | 43 | Callum Pearson | 96 | S10 | Hastings | 1:05.36 |
| 7 | 41 | Conner Morrison | 97 | S14 | Aberdeen Per | 1:06.79 |
| 8 | 39 | Liam Spence | 00 | S14 | KingstonHull | 1:07.38 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 48 | Harry Wellington | 99 | S13 | Gloucester | 1:02.29 |
| 2 | 50 | Tyler Ioannou | 98 | S14 | Bracknell | 1:00.55 |
| 3 | 52 | Stephen Clegg | 95 | S12 | UniOfStirl | 58.49 |
| 4 | 54 | James Hollis | 94 | S10 | Loughboro Un | 57.48 |
| 5 | 53 | Kahoru Harazawa | 97 | S10 | Loughboro Un | 57.92 |
| 6 | 51 | Jordan Catchpole | 99 | S14 | Co Norwich | 1:00.36 |
| 7 | 49 | Thomas Hamer | 98 | S14 | Co Manch Aq | 1:02.18 |
| 8 | 47 | Alex Rosser | 96 | S14 | Swansea Aq | 1:03.59 |