Men Open 100m Butterfly - Heats
Full Results
| Place | Name | YoB | Club | | Time | | | FINA Pt | | 50 |
| 1. | James Guy | (95) | Bath NC | | 51.71 | | | 877 | | 24.15 |
| 2. | Jacob Peters | (00) | Bath NC | | 52.17 | | | 854 | | 24.32 |
| 3. | Edward Mildred | (03) | Northampton | | 52.64 | | | 831 | | 25.09 |
| 4. | Archie Goodburn | (01) | Loughboro NC | | 53.75 | | | 781 | | 25.12 |
| 5. | Lewis Fraser | (00) | Swansea Uni | | 54.28 | | | 758 | | 25.10 |
| 6. | Thomas Beeley | (99) | Plymouth Lea | | 54.51 | | | 748 | | 25.65 |
| 7. | Jakob Goodman | (00) | Loughboro Un | | 54.80 | | | 737 | | 25.57 |
| 8. | Scott McLay | (99) | UniOfStirl | | 55.14 | | | 723 | | 25.66 |
| 9. | Gregor Swinney | (97) | Co Glasgow | | 55.18 | | | 721 | | 25.81 |
| 10. | Freddy Clampett | (98) | Plymouth Lea | | 55.24 | | | 719 | | 25.73 |
| 11. | Robert Newell | (90) | Loughboro Un | | 55.63 | | | 704 | | 25.75 |
| 12. | Cole Hewitt | (02) | Swansea Uni | | 55.83 | | | 696 | | 25.85 |
| 13. | Ross Leslie | (98) | Edinburgh Un | | 55.90 | | | 694 | | 25.85 |
| 14. | Michael Klimaszewski | (04) | Hatfield | | 56.44 | | | 674 | | 26.47 |
| 15. | Mark Ford | (03) | Co Glasgow | | 56.50 | | | 672 | | 26.03 |
| 16. | Isaac Von Fintel | (01) | Repton Swim | | 58.89 | | | 593 | | 27.58 |
