EVENT 310 Open/Male 16 Yrs/Over 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Ewan Ascott | 18 | Long Eaton | 30.60 |
| 4 | 3 | Matthew Foreman | 17 | Buxton | 30.13 |
| 5 | 2 | Jamie Yau | 17 | Etwall | 30.60 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Matthew Wilson | 18 | Dronfield | 30.00 |
| 2 | 6 | Zachary Stephenson | 16 | Repton | 29.80 |
| 3 | 8 | Joshua Bestwick | 23 | DerbyPhoenix | 29.56 |
| 4 | 10 | Oliver Gillott | 17 | Dronfield | 29.48 |
| 5 | 9 | James Duggan | 16 | Swadlincote | 29.50 |
| 6 | 7 | Gye Whitlam | 42 | DerbyPhoenix | 29.76 |
| 7 | 5 | Sergei Kulev | 16 | Rykneld | 30.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Harry Maskrey | 16 | BelperMarlin | 28.90 |
| 2 | 14 | James Ralph | 16 | Buxton | 28.34 |
| 3 | 16 | Jude Denning | 17 | Repton | 27.10 |
| 4 | 18 | Leo Pollock | 17 | Repton | 25.40 |
| 5 | 17 | Ezra Lambert | 17 | Derby Excel | 26.50 |
| 6 | 15 | Joel Tannahill | 19 | Ripley | 27.80 |
| 7 | 13 | Ryan Cornish | 17 | Buxton | 28.50 |
| 8 | 11 | Christopher Oliver | 16 | Long Eaton | 28.90 |