EVENT 201 Men Open 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 3 | 6 | Freddy Clampett | 98 | Plymouth Lea | 2:02.79 |
| 4 | 10 | Edward Mildred | 03 | Northampton | 1:58.64 |
| 5 | 8 | Jay Lelliott | 95 | Co Sheffield | 1:59.92 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 2 | Isaac Von Fintel | 01 | Repton Swim | 2:06.09 |
| 2 | 4 | Michael Klimaszewski | 04 | Hatfield | 2:05.61 |
| 3 | 7 | Jakob Goodman | 00 | Loughboro Un | 2:01.39 |
| 4 | 11 | James Guy | 95 | Bath NC | 1:56.34 |
| 5 | 9 | Thomas Beeley | 99 | Plymouth Lea | 1:59.01 |
| 6 | 5 | Rhys Edwards | 02 | Swansea Aq | 2:03.27 |
| 7 | 3 | R Ormonde-Cunningham | 98 | Loughboro Un | 2:06.09 |
| 8 | 1 | Cole Hewitt | 02 | Swansea Uni | 2:06.81 |