EVENT 106 Mens Open 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 2 | Campbell Stephen | 18 | Co Derby | 1:08.07 |
| 2 | 4 | Haydn Woolley | 18 | Plymouth Lea | 1:08.05 |
| 3 | 6 | George Smith | 15 | Ellesmere Co | 1:07.98 |
| 4 | 8 | James Bilbao | 18 | Ellesmere Co | 1:07.94 |
| 5 | 7 | Joel Lange | 18 | Maidenhead | 1:07.96 |
| 6 | 5 | Bryn Couser | 17 | Bishop Stort | 1:08.01 |
| 7 | 3 | Thomas Cannon | 18 | Inverclyde | 1:08.05 |
| 8 | 1 | Dimitrios Tsaliagkos | 15 | Millfield | 1:08.08 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 10 | Louis Edwards-Pratt | 17 | Plymouth Lea | 1:07.88 |
| 2 | 12 | Charlie Trotman | 17 | Guildford Ct | 1:07.70 |
| 3 | 14 | Jadon Wuilliez | 17 | Plymouth Lea | 1:07.62 |
| 4 | 16 | Benjamin Fannon | 17 | Plymouth Lea | 1:07.40 |
| 5 | 15 | Matthew Garrity | 15 | Inverclyde | 1:07.49 |
| 6 | 13 | Sam Van Der Stroom | 16 | Mt Kelly | 1:07.64 |
| 7 | 11 | Greg Fairbairn | 17 | Bellshill | 1:07.80 |
| 8 | 9 | Joseph Moore | 18 | Harrogate | 1:07.91 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 18 | Rory Dickson | 17 | N Ayrshire | 1:06.95 |
| 2 | 20 | Stephen Taylor | 18 | Ellesmere Co | 1:06.85 |
| 3 | 22 | Oliver Kettle | 15 | Portsmouth N | 1:06.48 |
| 4 | 24 | Max Hagan | 18 | Co Glasgow | 1:06.30 |
| 5 | 23 | Billy Wotton | 16 | Co Oxford | 1:06.33 |
| 6 | 21 | Charles Rayner | 18 | Wycombe Dist | 1:06.52 |
| 7 | 19 | Timur Gulyiyen | 18 | Wycombe Dist | 1:06.92 |
| 8 | 17 | Jake Lambert | 18 | Co Leeds | 1:06.97 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 26 | Jason Robson | 16 | York City | 1:06.17 |
| 2 | 28 | Toby Arnold | 18 | Derventio | 1:05.93 |
| 3 | 30 | William Ellington | 16 | Millfield | 1:05.65 |
| 4 | 32 | David Bloomfield | 20 | Loughboro Un | 1:05.55 |
| 5 | 31 | Joshua Pemberton | 19 | Derventio | 1:05.60 |
| 6 | 29 | Adam Metcalf | 18 | Ellesmere Co | 1:05.76 |
| 7 | 27 | Alexander Boyd | 18 | Thanet Swim | 1:05.97 |
| 8 | 25 | John Kean | 17 | West Lothian | 1:06.22 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 34 | Joel Thompson | 18 | Ellesmere Co | 1:05.22 |
| 2 | 36 | Samuel Neeld | 19 | Wrekin Coll | 1:05.12 |
| 3 | 38 | Cameron Muir | 20 | Co Glasgow | 1:05.05 |
| 4 | 40 | Matthew Rogers | 19 | Birm'ham Uni | 1:04.91 |
| 5 | 39 | Andrew Macintosh | 18 | Edinburgh Un | 1:04.96 |
| 6 | 37 | Cameron Williams | 15 | Dartmoor DA | 1:05.06 |
| 7 | 35 | Joshua Horobin | 20 | BelperMarlin | 1:05.21 |
| 8 | 33 | Joseph Murray | 20 | Loughboro Un | 1:05.36 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 44 | William Mitchell | 17 | Millfield | 1:04.40 |
| 2 | 50 | Connor Bryan | 19 | Co Oxford | 1:03.36 |
| 3 | 56 | Edward Baxter | 21 | Loughboro NC | 1:02.03 |
| 4 | 62 | Ross Murdoch | 25 | UniOfStirl | 59.14 |
| 5 | 59 | David Murphy | 21 | Co Oxford | 1:01.03 |
| 6 | 53 | Kyle Boyek | 27 | UniOfStirl | 1:03.15 |
| 7 | 47 | Lewis Fraser | 19 | Swansea Uni | 1:03.51 |
| 8 | 41 | Jonathan Milner | 18 | Co Leeds | 1:04.84 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 45 | Harry Devlin | 19 | Loughboro Un | 1:03.84 |
| 2 | 51 | Marcus Gardiner | 22 | Co Bristol | 1:03.34 |
| 3 | 57 | Zak Aitchison | 21 | UniOfStirl | 1:01.83 |
| 4 | 63 | James Wilby | 26 | Loughboro NC | 58.64 |
| 5 | 60 | Lawrence Palmer | 27 | Putteridge | 1:00.96 |
| 6 | 54 | Adam Chillingworth | 22 | Plymouth Lea | 1:02.58 |
| 7 | 48 | Kyle Booth | 18 | Co Cardiff | 1:03.47 |
| 8 | 42 | Oliver Taverner | 18 | Mt Kelly | 1:04.66 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 46 | George Clough | 20 | UniOfStirl | 1:03.60 |
| 2 | 52 | George Hopkins | 20 | Swansea Uni | 1:03.19 |
| 3 | 58 | Gregory Butler | 19 | Co Derby | 1:01.23 |
| 4 | 64 | Adam Peaty | 25 | Loughboro NC | 57.10 |
| 5 | 61 | Craig Benson | 25 | UniOfStirl | 59.50 |
| 6 | 55 | Archie Goodburn | 18 | Warrender Ba | 1:02.13 |
| 7 | 49 | James McFadzen | 20 | Loughboro Un | 1:03.36 |
| 8 | 43 | Rhodri Williams | 17 | Nofio Clwyd | 1:04.59 |