EVENT 104 Men Open 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 3 | 11 | Adam Chillingworth | 97 | Plymouth Lea | 1:02.57 |
| 4 | 17 | Ross Murdoch | 94 | UniOfStirl | 59.21 |
| 5 | 14 | Archie Goodburn | 01 | Loughboro NC | 1:01.01 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 3 | William Mitchell | 02 | Loughboro Un | 1:04.67 |
| 2 | 7 | Lewis Fraser | 00 | Swansea Uni | 1:03.80 |
| 3 | 12 | Kyle Booth | 01 | Co Cardiff | 1:02.44 |
| 4 | 18 | James Wilby | 93 | Loughboro NC | 58.46 |
| 5 | 15 | David Murphy | 98 | Loughboro NC | 1:00.44 |
| 6 | 9 | Marcus Gardiner | 97 | Co Bristol | 1:03.72 |
| 7 | 5 | Bradley Newman | 01 | Co Cardiff | 1:04.44 |
| 8 | 1 | L Clifford-Stephenson | 93 | Natare W Lon | 1:05.08 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 4 | Samuel Neeld | 00 | SurreyUni SC | 1:04.51 |
| 2 | 8 | Harvey Freeman | 04 | Northampton | 1:03.79 |
| 3 | 13 | Gregory Butler | 00 | Loughboro NC | 1:01.41 |
| 4 | 19 | Adam Peaty | 94 | Loughboro NC | 56.88 |
| 5 | 16 | Craig Benson | 94 | UniOfStirl | 59.79 |
| 6 | 10 | Max Hagan | 01 | Co Glasgow | 1:03.56 |
| 7 | 6 | Matthew Rogers | 00 | Birm'ham Uni | 1:04.33 |
| 8 | 2 | David Bloomfield | 99 | Loughboro Un | 1:04.68 |