EVENT 203 Open/Male 10 /Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Nikodem DORSZ | 12 | Co Liverpool | 1:14.10 |
| 2 | 4 | Tsz Yui CHIU | 14 | Halton | 1:09.30 |
| 3 | 6 | Daniel FRENCH | 15 | Wirral Metro | 1:07.20 |
| 4 | 8 | Jasper GIBSON-BIRD | 15 | Fleetwood | 1:06.52 |
| 5 | 7 | Elliot LEEDHAM | 17 | Bebington | 1:07.10 |
| 6 | 5 | Zack COCKSEDGE | 17 | Knutsford | 1:07.30 |
| 7 | 3 | Isaac ROBINSON | 13 | Co Sheffield | 1:13.33 |
| 8 | 1 | Dylan HARTE | 11 | Co Liverpool | 1:20.55 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Tom GILLESPIE-ANTAL | 16 | Garston | 1:05.97 |
| 2 | 12 | Dylan GREGORY | 15 | Co Liverpool | 1:04.98 |
| 3 | 14 | Theodor SALTER | 15 | Plymouth Lea | 1:04.36 |
| 4 | 16 | Ivan LIMBERT | 15 | Stretford | 1:04.14 |
| 5 | 15 | Daniel ASHTON | 16 | Blackburn | 1:04.34 |
| 6 | 13 | James VAUGHAN | 16 | Ather & Leig | 1:04.60 |
| 7 | 11 | Leo ASHCROFT | 14 | Ather & Leig | 1:05.63 |
| 8 | 9 | Jacob AGATE | 15 | Halton | 1:06.50 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | James GRAHAM | 15 | Co Liverpool | 1:03.82 |
| 2 | 20 | Oliver MOORE | 18 | Satellite | 1:01.80 |
| 3 | 22 | Rares ACHIM | 17 | Co Liverpool | 1:01.08 |
| 4 | 24 | Joseph SWART | 20 | SurreyUni SC | 57.40 |
| 5 | 23 | Luke BRUSSELS | 18 | LiverpoolPen | 1:00.00 |
| 6 | 21 | Cole HOOD | 16 | Ather & Leig | 1:01.32 |
| 7 | 19 | Ben STEPHENSON | 15 | Wirral Metro | 1:02.03 |
| 8 | 17 | James ELLISON | 18 | Knutsford | 1:04.10 |