EVENT 304 Open/Male 14 /Under 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Charlie Parker | 12 | Preston | 1:28.50 |
| 2 | 4 | Ewan Galloway | 11 | Wigan BEST | 1:28.20 |
| 3 | 7 | Dylan Taylor | 12 | Halton | 1:26.90 |
| 4 | 9 | Elliott Logan | 11 | Carnforth | 1:26.50 |
| 5 | 8 | Ben Davidson | 11 | Workington | 1:26.80 |
| 6 | 5 | Olly Swarbrick | 12 | Ulverston | 1:27.90 |
| 7 | 3 | Hugo Vincent-Dootson | 12 | Co Salford | 1:28.40 |
| 8 | 1 | Samuel Harrison | 12 | Burnley BOBC | 1:30.53 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Myles Ivinson | 12 | Cockermouth | 1:25.60 |
| 2 | 13 | Elliott Filbin | 11 | Blackburn | 1:25.30 |
| 3 | 15 | Xavier Sowden | 12 | Wirral Metro | 1:25.20 |
| 4 | 17 | Myles Best | 12 | Co Liverpool | 1:23.53 |
| 5 | 16 | Harry Davies | 12 | Co Liverpool | 1:23.90 |
| 6 | 14 | Harry Doherty | 12 | Stockport Mo | 1:25.20 |
| 7 | 12 | Harry Shea | 12 | Trafford Met | 1:25.40 |
| 8 | 10 | Harry Atkinson | 11 | Kendal | 1:25.70 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 19 | Evan Wong | 12 | Preston | 1:19.08 |
| 2 | 21 | Alfie Butterworth | 13 | Winsford | 1:18.50 |
| 3 | 23 | Oscar Roberts | 13 | Satellite | 1:17.50 |
| 4 | 26 | Lucas Sayle | 12 | Ramsbottom | 1:17.07 |
| 5 | 24 | Freddie Garner | 12 | Co Liverpool | 1:17.47 |
| 6 | 22 | Jack Howard | 13 | Fleetwood | 1:18.10 |
| 7 | 20 | Daniel Rykowski | 13 | Leyland Barr | 1:18.53 |
| 8 | 18 | Jenson Roberts | 11 | Satellite | 1:19.50 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 30 | Albion Dobrushi | 12 | Co Liverpool | 1:16.72 |
| 2 | 36 | Leo Ashcroft | 13 | Wigan BEST | 1:11.70 |
| 3 | 42 | Jasper De Glopper | 14 | Warrington W | 1:09.30 |
| 4 | 48 | Benji Sutcliffe | 14 | Ramsbottom | 1:08.43 |
| 5 | 45 | Thomas Dale | 14 | Warrington W | 1:08.80 |
| 6 | 39 | Oscar Maddrell | 13 | Io Man | 1:10.81 |
| 7 | 33 | Thomas Owens | 12 | Leyland Barr | 1:14.63 |
| 8 | 27 | Tsz Yui Chiu | 13 | Halton | 1:17.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 31 | Jack Kennedy | 13 | Stretford | 1:16.64 |
| 2 | 37 | Joe Chadwick | 14 | Aquabears | 1:11.20 |
| 3 | 43 | Ethan Dwyer | 13 | Co Liverpool | 1:09.12 |
| 4 | 49 | Jacob Baker | 14 | Aquabears | 1:07.11 |
| 5 | 46 | Bogdan Tonu | 14 | Bolton Metro | 1:08.76 |
| 6 | 40 | Samuel Wilson | 14 | Ramsbottom | 1:10.74 |
| 7 | 34 | Cheuk Hei Li | 13 | Trafford Met | 1:13.00 |
| 8 | 28 | Kaloyan Nedyalkov | 13 | Workington | 1:16.92 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 32 | Samuel Higginbottom | 13 | Lancaster | 1:14.72 |
| 2 | 38 | Tyler Barber | 13 | Co Manch Aq | 1:10.90 |
| 3 | 44 | Daniel French | 14 | Wirral Metro | 1:08.94 |
| 4 | 51 | Ben Stephenson | 14 | Garston | 1:03.64 |
| 5 | 47 | James Graham | 14 | Co Liverpool | 1:08.53 |
| 6 | 41 | Carter Kneale | 14 | Io Man | 1:10.50 |
| 7 | 35 | Daniel Lesti | 13 | Co Salford | 1:12.48 |
| 8 | 29 | Ben Urmston | 13 | Wigan BEST | 1:16.80 |