Mens Open 100m Butterfly - Heats (Declared Winners)
Full Results
| Place | Name | YoB | Club | | Time | | R.T. | | | 50 |
| 1. | James Guy | (95) | Millfield | | 54.31 | | + 0.73 | | | 25.63 |
| 2. | Ryan FLANAGAN | (94) | Co Sheffield | | 55.65 | | + 0.72 | | | 26.19 |
| 3. | Ieuan Lloyd | (93) | Co Cardiff | | 56.55 | | + 0.79 | | | 26.45 |
| 4. | Jake TYSON | (97) | teamipswich | | 56.87 | | + 0.75 | | | 27.20 |
| 5. | Joe Marsh | (90) | TauntonDeane | | 57.21 | | + 0.80 | | | 26.99 |
| 6. | Cristian Rotundu | (94) | Ealing | | 57.60 | | + 0.82 | | | 27.11 |
| 7. | Callum NORTJE | (96) | Ellesmere Co | | 58.82 | | + 0.92 | | | 27.52 |
| 8. | Calum FERGUSON | (96) | Woking | | 59.17 | | + 0.72 | | | 27.10 |
| 9. | Rikki Morris | (90) | Co Coventry | | 1:00.28 | | + 0.85 | | | 28.74 |
| 10. | Adel Elfakir | (96) | Northampton | | 1:00.93 | | + 0.75 | | | 28.09 |
