EVENT 201 Mens Open 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 2 | Ayotobi Laguda | 15 | Hatfield | 1:11.70 |
| 1 | 4 | Lewis Binning | 14 | Romford Town | 1:11.62 |
| 2 | 6 | Sandor Apponyi | 14 | Mt Kelly | 1:11.55 |
| 3 | 8 | Louis Metselaar | 15 | Deepings | 1:11.50 |
| 4 | 10 | Joseph Thompson | 15 | Plymouth Lea | 1:11.29 |
| 5 | 9 | Dominic Bools | 14 | Nova Cent'n | 1:11.32 |
| 6 | 7 | Christopher Sims | 14 | Wycombe Dist | 1:11.50 |
| 7 | 5 | Jamie Owen | 15 | Amersham | 1:11.60 |
| 8 | 3 | Finn Jeffery | 14 | St Felix Sch | 1:11.65 |
| 9 | 1 | Cameron White | 15 | Elmbridge | 1:11.70 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 12 | Harvey Freeman | 13 | Northampton | 1:11.25 |
| 1 | 14 | Oliver Cashin | 15 | Co Cambridge | 1:11.19 |
| 2 | 16 | Joshua Bristow | 15 | Modernian | 1:11.19 |
| 3 | 18 | Dakota Ravetali | 15 | Burnley BOBC | 1:11.12 |
| 4 | 20 | Matthew Lyons | 14 | Co Leeds | 1:10.65 |
| 5 | 19 | Luca Fankhauser | 15 | Guildford Ct | 1:10.74 |
| 6 | 17 | Matthew Harris | 15 | Royal Wolv | 1:11.15 |
| 7 | 15 | Bryn Couser | 15 | Bishop Stort | 1:11.19 |
| 8 | 13 | Benjamin Foster | 15 | Stockport Mo | 1:11.25 |
| 9 | 11 | Dylan Gallagher | 14 | TauntonDeane | 1:11.26 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 22 | Jackson O'Rourke | 15 | Northampton | 1:10.60 |
| 1 | 24 | Ben McEvoy | 15 | Co Salford | 1:10.52 |
| 2 | 26 | Drew McGregor | 14 | S Bournem'th | 1:10.08 |
| 3 | 28 | Sam Perkins | 15 | teamipswich | 1:10.02 |
| 4 | 30 | Jack Goodwin | 14 | Portsmouth N | 1:09.89 |
| 5 | 29 | Daniel Buckley | 15 | Halton | 1:09.93 |
| 6 | 27 | Thomas White | 15 | Nova Cent'n | 1:10.08 |
| 7 | 25 | Ryan Wilcox | 15 | Nova Cent'n | 1:10.52 |
| 8 | 23 | Pravin Mahendrakumar | 14 | Bromley | 1:10.56 |
| 9 | 21 | Samuel Norton | 15 | Truro City | 1:10.64 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 32 | Ethan McNeil | 15 | Team Bath AS | 1:09.13 |
| 1 | 34 | Charlie Trotman | 15 | Guildford Ct | 1:08.18 |
| 2 | 36 | William Ellington | 14 | Millfield | 1:07.97 |
| 3 | 38 | William Mitchell | 15 | Millfield | 1:06.60 |
| 4 | 40 | James Watson | 17 | Plymouth Lea | 1:05.93 |
| 5 | 39 | Matthew Rogers | 17 | Bromley | 1:05.96 |
| 6 | 37 | Thomas Leman | 15 | RTW Monson | 1:07.57 |
| 7 | 35 | Cameron Williams | 13 | Dartmoor DA | 1:08.16 |
| 8 | 33 | Finnian Trehane | 15 | Bourmth Coll | 1:08.19 |
| 9 | 31 | Billy Wotton | 14 | Ellesmere Co | 1:09.51 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 44 | Thomas Speed | 18 | Co Sund'land | 1:05.52 |
| 1 | 50 | Jasper Lye | 18 | Co Bristol | 1:04.60 |
| 2 | 56 | Joel O'Halleron | 21 | Derwentside | 1:04.09 |
| 3 | 62 | Callum Smart | 17 | Co Oxford | 1:03.01 |
| 4 | 68 | Andrew Willis | 27 | Bath NC | 1:00.95 |
| 5 | 65 | Chris Steeples | 25 | Derventio | 1:01.75 |
| 6 | 59 | Likith Prema | 19 | Inspire IND | 1:03.50 |
| 7 | 53 | Robert Cowley | 20 | Co Manch Aq | 1:04.19 |
| 8 | 47 | Gregory Butler | 17 | Co Derby | 1:04.86 |
| 9 | 41 | Jonathan Milner | 16 | Co Leeds | 1:05.72 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 45 | Harry James | 22 | AbingdonVale | 1:05.18 |
| 1 | 51 | Adam Chillingworth | 20 | Plymouth Lea | 1:04.38 |
| 2 | 57 | Marcus Gardiner | 20 | Plymouth Lea | 1:03.74 |
| 3 | 63 | Edward Baxter | 19 | Loughboro NC | 1:01.94 |
| 4 | 69 | Charlie Attwood | 20 | Bath NC | 1:00.39 |
| 5 | 66 | Lawrence Palmer | 25 | Putteridge | 1:01.66 |
| 6 | 60 | Robert Lancaster | 20 | Loughboro Un | 1:03.42 |
| 7 | 54 | Connor Bryan | 17 | Co Oxford | 1:04.17 |
| 8 | 48 | Sebastian Stewart | 17 | Sevenoaks | 1:04.85 |
| 9 | 42 | Jack O'Brien | 17 | Co Manch Aq | 1:05.54 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 46 | David Trickett | 22 | Soundwell | 1:05.09 |
| 1 | 52 | Oliver Taverner | 16 | Mt Kelly | 1:04.26 |
| 2 | 58 | T Mackay-Champion | 20 | Co Oxford | 1:03.55 |
| 3 | 64 | Luke Davies | 20 | Bath Univ | 1:01.93 |
| 4 | 70 | James Wilby | 24 | Loughboro NC | 1:00.05 |
| 5 | 67 | David Murphy | 19 | Co Oxford | 1:01.32 |
| 6 | 61 | Harry Devlin | 17 | York City | 1:03.39 |
| 7 | 55 | Neil Redman | 23 | Portsmouth N | 1:04.17 |
| 8 | 49 | Yaron Gerber | 19 | Barnet Copt | 1:04.72 |
| 9 | 43 | Edmund Ashton | 19 | Loughboro Un | 1:05.52 |