EVENT 202 Mens Open 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 1 | Hosea Waweru | 14 | Co Leicester | 1:10.36 |
| 4 | 3 | Barney Howarth-Osborne | 14 | Sheffield C | 1:09.62 |
| 5 | 2 | E Paniagua-Gutierrez | 14 | Co Leeds | 1:08.95 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 4 | Jake Reynolds | 14 | Bolton Metro | 1:09.46 |
| 1 | 6 | Cameron Singh Mander | 15 | Co Bradford | 1:10.73 |
| 2 | 8 | Christopher Sims | 15 | Co Oxford | 1:07.82 |
| 3 | 10 | Olivier Vedrenne | 13 | Co Norwich | 1:08.97 |
| 4 | 12 | Nikolai Khutoryanskiy | 15 | Reading | 1:06.13 |
| 5 | 11 | Amir Castronovo | 15 | Camden Swiss | 1:08.75 |
| 6 | 9 | Harrison Jarvis | 14 | Thurrock | 1:09.23 |
| 7 | 7 | Carter Lees | 15 | KingstonHull | 1:08.53 |
| 8 | 5 | Edward Hunt | 15 | Teddington | 1:09.03 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 14 | Benjamin Green | 14 | Watford SC | 1:08.93 |
| 1 | 16 | Michael Edwards | 14 | Mid Sussex | 1:07.65 |
| 2 | 18 | Dalton Clapham | 15 | Co Leeds | 1:08.43 |
| 3 | 20 | Clement Kubica | 15 | Millfield | 1:08.20 |
| 4 | 22 | Aidan Fothergill | 14 | Team Jorvik | 1:08.81 |
| 5 | 21 | Lewis Shayler | 15 | Watford SC | 1:06.84 |
| 6 | 19 | Jack Smith | 14 | Cockermouth | 1:08.72 |
| 7 | 17 | Max Wass | 15 | Cosacss | 1:09.04 |
| 8 | 15 | Brandon Harris | 15 | Beachfield | 1:07.96 |
| 9 | 13 | Dominic Bools | 15 | Radford | 1:07.99 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 24 | James Rollaston | 15 | Trafford Met | 1:09.54 |
| 1 | 26 | Teilo Crow | 15 | Co Bristol | 1:07.34 |
| 2 | 28 | Luke Ibbeson | 15 | Chesham | 1:07.51 |
| 3 | 30 | Farran Gregory | 14 | TauntonDeane | 1:07.49 |
| 4 | 32 | Rafe Dobson | 14 | Co Milton K | 1:07.23 |
| 5 | 31 | Dimitrios Tsaliagkos | 14 | Millfield | 1:05.93 |
| 6 | 29 | Sandor Apponyi | 15 | Mt Kelly | 1:07.22 |
| 7 | 27 | Freddie Laws | 15 | West Norfolk | 1:07.52 |
| 8 | 25 | Finn Jeffery | 15 | St Felix Sch | 1:08.46 |
| 9 | 23 | Wyatt Walsh | 15 | Millfield | 1:08.16 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 34 | Henry King | 15 | West Suffolk | 1:08.68 |
| 1 | 36 | Lewis Binning | 15 | Basildon Ph | 1:08.58 |
| 2 | 38 | Louis Nguyen | 15 | Mt Kelly | 1:07.81 |
| 3 | 40 | Joseph Sin | 15 | Mt Kelly | 1:07.06 |
| 4 | 42 | Drew McGregor | 15 | S Bournem'th | 1:08.97 |
| 5 | 41 | Max Hanson | 15 | Haringey | 1:06.87 |
| 6 | 39 | James Dillon | 15 | Basildon Ph | 1:07.05 |
| 7 | 37 | Jamie Scutt | 15 | Crawley | 1:07.03 |
| 8 | 35 | Jack Goodwin | 15 | Portsmouth N | 1:05.35 |
| 9 | 33 | Oliver Bedworth | 15 | Guildford Ct | 1:07.50 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 44 | Ryan Griffiths | 15 | Co Coventry | 1:05.70 |
| 1 | 46 | Oliver Kettle | 14 | Portsmouth N | 1:05.34 |
| 2 | 48 | Harvey Freeman | 14 | Northampton | 1:04.61 |
| 3 | 50 | William Ellington | 15 | Millfield | 1:03.83 |
| 4 | 52 | Jason Robson | 15 | York City | 1:04.47 |
| 5 | 51 | Billy Wotton | 15 | Co Oxford | 1:04.63 |
| 6 | 49 | Tommaso Cervini | 15 | Hamilton UAE | 1:05.65 |
| 7 | 47 | Sam Williamson | 14 | Mt Kelly | 1:06.71 |
| 8 | 45 | Joe Bagley | 15 | Co Derby | 1:07.75 |
| 9 | 43 | Dylan Gallagher | 15 | TauntonDeane | 1:07.69 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 56 | Dominic Holloway | 22 | Woking | 1:04.51 |
| 1 | 62 | Joshua Pemberton | 18 | Derventio | 1:02.99 |
| 2 | 68 | Samuel Goldrick | 20 | Oldham Aqua | 1:03.42 |
| 3 | 74 | Neil Redman | 24 | Portsmouth N | 1:01.59 |
| 4 | 80 | Lawrence Palmer | 26 | Putteridge | 59.83 |
| 5 | 77 | Adam Chillingworth | 21 | Plymouth Lea | 1:00.81 |
| 6 | 71 | Samuel Neeld | 18 | Wrekin Coll | 1:02.25 |
| 7 | 65 | Yaron Gerber | 20 | Barnet Copt | 1:02.80 |
| 8 | 59 | David Bloomfield | 19 | Loughboro Un | 1:01.42 |
| 9 | 53 | Cameron Williams | 14 | Dartmoor DA | 1:04.68 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 57 | Ben Taylor-Walsh | 20 | East Leeds | 1:03.65 |
| 1 | 63 | Jonathan Milner | 17 | Co Leeds | 1:04.45 |
| 2 | 69 | Connor Bryan | 18 | Co Oxford | 1:00.68 |
| 3 | 75 | Robert Cowley | 21 | Co Manch Aq | 1:01.94 |
| 4 | 81 | David Murphy | 20 | Co Oxford | 59.01 |
| 5 | 78 | Oliver Crosby | 19 | Co Sheffield | 1:00.06 |
| 6 | 72 | Marcus Gardiner | 21 | Co Bristol | 1:00.33 |
| 7 | 66 | Levin Veale | 24 | Totnes | 1:05.13 |
| 8 | 60 | David Miller | 19 | Bath Univ | 1:04.34 |
| 9 | 54 | Cameron Matthews | 18 | Hamilton UAE | 1:04.85 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 58 | Matthew Rogers | 18 | Birm'ham Uni | 1:03.87 |
| 1 | 64 | Roman Scherer | 23 | Plymouth Lea | 1:03.44 |
| 2 | 70 | T Mackay-Champion | 21 | Co Oxford | 1:01.17 |
| 3 | 76 | James McFadzen | 19 | Loughboro Un | 1:01.43 |
| 4 | 82 | James Wilby | 25 | Loughboro Un | 57.81 |
| 5 | 79 | Edward Baxter | 20 | Loughboro Un | 59.48 |
| 6 | 73 | Zdravko Bablakov | 16 | Bo Newham | 1:02.97 |
| 7 | 67 | Harry Devlin | 18 | Loughboro Un | DN:C . |
| 8 | 61 | Matthew Tang | 18 | Mt Kelly | 1:03.80 |
| 9 | 55 | Oliver Taverner | 17 | Mt Kelly | 1:03.40 |