EVENT 406 Mens Open 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 1 | Liam Bollands | 99 | Middlesboro | 1:10.08 |
| 2 | 3 | Reuben Alexander | 99 | Bracknell | 1:09.97 |
| 3 | 5 | Kenan Yeung | 00 | Preston | 1:09.82 |
| 4 | 7 | Matthew Holt | 00 | Derventio | 1:09.71 |
| 5 | 6 | Thomas Dean | 00 | Maidenhead | 1:09.73 |
| 6 | 4 | Samuel Peck | 00 | UEA Norwich | 1:09.94 |
| 7 | 2 | Joshua Horobin | 99 | BelperMarlin | 1:10.06 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 9 | Lewis Waters | 99 | Co Newport | 1:09.67 |
| 2 | 11 | Alexander Rogers | 99 | Co Birm'ham | 1:09.29 |
| 3 | 13 | James McFadzen | 99 | Newbury | 1:09.21 |
| 4 | 15 | Nathan Hughes | 00 | Hatfield | 1:08.88 |
| 5 | 14 | David Bloomfield | 99 | Brompton | 1:09.07 |
| 6 | 12 | George Clough | 99 | Warrender Ba | 1:09.27 |
| 7 | 10 | Benjamin Arkle | 99 | Satellite | 1:09.34 |
| 8 | 8 | Benjamin Hutchins | 00 | Newbury | 1:09.67 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 17 | Hugh Takemoto | 99 | Warrington W | 1:08.70 |
| 2 | 19 | Harry Devlin | 00 | Co Leeds | 1:08.50 |
| 3 | 21 | Lewis Fraser | 00 | Swansea Aq | 1:07.64 |
| 4 | 23 | Thomas Speed | 99 | Bo Barnsley | 1:07.41 |
| 5 | 22 | Benjamin Lawton | 99 | Aquae Sulis | 1:07.49 |
| 6 | 20 | James Wamsley | 99 | Exeter City | 1:08.47 |
| 7 | 18 | Gregory Butler | 00 | Co Derby | 1:08.61 |
| 8 | 16 | Thomas Clifton | 99 | Preston | 1:08.73 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 25 | Christopher Green | 97 | Guildford Ct | 1:06.61 |
| 2 | 27 | Jarvis Parkinson | 98 | Donc Dartes | 1:06.46 |
| 3 | 29 | James Lewis | 98 | Co Cardiff | 1:06.41 |
| 4 | 31 | Tobermory McKay-Champi | 97 | Perth City | 1:06.15 |
| 5 | 30 | Joshua Lawson | 99 | Millfield | 1:06.15 |
| 6 | 28 | Kieran Allsop | 97 | Portsmouth N | 1:06.45 |
| 7 | 26 | Robert Lancaster | 97 | teamipswich | 1:06.54 |
| 8 | 24 | Cameron Muir | 99 | Sth Ayrshire | 1:06.72 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 35 | David Murphy | 98 | Co Oxford | 1:05.84 |
| 2 | 41 | Luke Spain | 92 | Bath Univ | 1:03.64 |
| 3 | 47 | Richard Spoor | 92 | Loughboro Un | 1:02.17 |
| 4 | 53 | Craig Benson | 94 | UniOfStirl | 1:00.40 |
| 5 | 50 | Christopher Steeples | 92 | Co Manch Aq | 1:00.97 |
| 6 | 44 | Lewis Clifford-Stephen | 93 | Killerwhales | 1:03.57 |
| 7 | 38 | Dominic Polling | 97 | Brighton | 1:04.74 |
| 8 | 32 | Andrew Davison | 98 | Preston | 1:06.08 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 36 | Luke Davies | 97 | Co Birm'ham | 1:04.79 |
| 2 | 42 | Euan Inglis | 93 | Edinburgh Un | 1:03.60 |
| 3 | 48 | Mark Tully | 92 | Edinburgh Un | 1:02.09 |
| 4 | 54 | Ross Murdoch | 94 | UniOfStirl | 59.33 |
| 5 | 51 | Andrew Willis | 90 | Bracknell | 1:00.88 |
| 6 | 45 | Matthew Nicholson | 91 | Co Glasgow | 1:02.90 |
| 7 | 39 | Edward Baxter | 98 | Cockermouth | 1:04.51 |
| 8 | 33 | Edmund Ashton | 98 | London Aquat | 1:05.95 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 37 | Joshua Thompson | 98 | Carnforth | 1:04.78 |
| 2 | 43 | Lawrence Palmer | 92 | Putteridge | 1:03.58 |
| 3 | 49 | Calum Tait | 94 | Edinburgh Un | 1:01.56 |
| 4 | 55 | Adam Peaty | 94 | Co Derby | 58.68 |
| 5 | 52 | James Wilby | 93 | Loughboro Un | 1:00.84 |
| 6 | 46 | Charlie Attwood | 97 | TauntonDeane | 1:02.34 |
| 7 | 40 | Max Hewett | 95 | Loughboro Un | 1:03.73 |
| 8 | 34 | Marcus Gardiner | 97 | Weston S M | 1:05.90 |