EVENT 251 Open/Male 14 /Under 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Toby Bigwood | 11 | Blackburn | 3:15.40 |
| 2 | 3 | Elias Moore | 11 | Bolton Metro | 3:10.60 |
| 3 | 5 | Kit Grandison | 13 | Kendal | 3:05.30 |
| 4 | 7 | Charlie Parker | 13 | Preston | 3:03.10 |
| 5 | 6 | Tobias Lambert | 13 | Preston | 3:04.32 |
| 6 | 4 | Ewan Galloway | 12 | Wigan BEST | 3:05.50 |
| 7 | 2 | Thomas Ford | 11 | Wilmslow | 3:13.10 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Heath Mason | 13 | Bolton Metro | 2:59.20 |
| 2 | 17 | Nikodem Dorsz | 12 | Co Liverpool | 2:47.15 |
| 3 | 25 | Thomas Owens | 13 | Leyland Barr | 2:37.61 |
| 4 | 31 | Oscar Maddrell | 14 | Io Man | 2:30.40 |
| 5 | 28 | Ethan Dwyer | 14 | Co Liverpool | 2:33.84 |
| 6 | 22 | Kaloyan Nedyalkov | 14 | Workington | 2:44.60 |
| 7 | 14 | Harry Shea | 13 | Trafford Met | 2:56.10 |
| 8 | 8 | Yosiyas Nicolardi | 11 | Co Liverpool | 3:01.98 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Dylan Harte | 11 | Co Liverpool | 2:57.00 |
| 2 | 18 | Joseph Monk | 14 | Leyland Barr | 2:46.07 |
| 3 | 26 | Ethan Craven | 13 | Warrington W | 2:37.10 |
| 4 | 32 | Leo Craven | 14 | Warrington W | 2:29.10 |
| 5 | 29 | Oscar O'Connell | 14 | Blackpool Aq | 2:31.10 |
| 6 | 23 | Albion Dobrushi | 13 | Co Liverpool | 2:43.65 |
| 7 | 15 | Evan Wong | 13 | Preston | 2:48.02 |
| 8 | 9 | Harry Atkinson | 12 | Kendal | 3:01.50 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | Junior Jay Lloyd | 13 | Stockport Mo | 2:56.50 |
| 2 | 21 | Jacob Wilson | 14 | Kendal | 2:44.70 |
| 3 | 27 | Alex Murray | 14 | Warrington W | 2:34.71 |
| 4 | 34 | Tyler Barber | 14 | Co Manch Aq | 2:23.60 |
| 5 | 30 | Daniel Lesti | 14 | Co Salford | 2:30.99 |
| 6 | 24 | Myles Best | 13 | Co Liverpool | 2:38.43 |
| 7 | 16 | Oliver Abson | 14 | Wigan BEST | 2:47.40 |
| 8 | 10 | Isaac Donovan | 11 | Co Salford | 3:00.10 |