EVENT 301 Men Open 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 2 | 1 | Josh Martin | 06 | Co Peterboro | 1:07.60 |
| 3 | 3 | Henry Benton | 07 | Maidenhead | 1:07.55 |
| 4 | 5 | Alfie McGuire | 06 | Chester Le S | 1:07.45 |
| 5 | 4 | Adam Bradley | 07 | Co Liverpool | 1:07.53 |
| 6 | 2 | Charles Simpson | 07 | Plymouth Lea | 1:07.60 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 7 | Joshua Sackree | 08 | Co Peterboro | 1:07.34 |
| 1 | 9 | Finley Wonnacott | 06 | N Cornwall | 1:07.22 |
| 2 | 11 | Jamie Steadman | 07 | Clevedon | 1:07.12 |
| 3 | 13 | Max Wainwright | 06 | Cheadle | 1:06.92 |
| 4 | 15 | Edward Robinson | 08 | Chelsea&West | 1:06.29 |
| 5 | 14 | Davey Unwin | 06 | Stockport Mo | 1:06.55 |
| 6 | 12 | Roger Davis | 08 | Soundwell | 1:07.02 |
| 7 | 10 | Finley Gilham | 07 | Bromley | 1:07.17 |
| 8 | 8 | Callum Nurse | 06 | Cleethorpes | 1:07.23 |
| 9 | 6 | Albert Whitlock | 06 | Millfield | 1:07.42 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 17 | William Morris | 06 | Middlesboro | 1:06.24 |
| 1 | 19 | James Abulencia | 06 | Co Birm'ham | 1:06.17 |
| 2 | 21 | Daniel Jackson | 06 | Bo Kirklees | 1:06.12 |
| 3 | 23 | Rhys Dodd | 07 | Soundwell | 1:05.99 |
| 4 | 25 | Kayden Sillah | 06 | AbingdonVale | 1:05.53 |
| 5 | 24 | Jad El Ghaziri | 06 | Mt Kelly | 1:05.60 |
| 6 | 22 | Leon Taylor | 06 | Shiverers | 1:06.02 |
| 7 | 20 | Daniel Ransom | 08 | Co Leeds | 1:06.16 |
| 8 | 18 | Jonathan Turck | 06 | Mt Kelly | 1:06.20 |
| 9 | 16 | Thomas Wilkinson | 06 | Co Sheffield | 1:06.29 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 27 | Joshua Scott | 06 | Bracknell | 1:05.48 |
| 1 | 29 | Matei Radu | 06 | Plymouth Lea | 1:05.12 |
| 2 | 31 | Arun Oelkers | 05 | Mt Kelly | 1:04.80 |
| 3 | 33 | Harry Stewart | 04 | Plymouth Lea | 1:04.69 |
| 4 | 35 | Sam Cornish | 04 | Enfield Sq | 1:04.49 |
| 5 | 34 | Oliver Munn | 07 | Bracknell | 1:04.56 |
| 6 | 32 | Can Tugcetin | 05 | AbingdonVale | 1:04.72 |
| 7 | 30 | Alexander Corver | 06 | Whitgift SC | 1:05.09 |
| 8 | 28 | Filip Nowacki | 07 | TigersJersey | 1:05.12 |
| 9 | 26 | Joshua Inglis | 07 | Bromley | 1:05.50 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 37 | Sam Williamson | 04 | Bath Univ | 1:04.43 |
| 1 | 39 | Carwyn Jones | 06 | Mt Kelly | 1:04.14 |
| 2 | 41 | Matt Burrows | 05 | Sevenoaks | 1:04.01 |
| 3 | 43 | Daniel Kinsella | 02 | Co Liverpool | 1:03.90 |
| 4 | 45 | Callum Woolfenden | 05 | Beckenham | 1:03.73 |
| 5 | 44 | Alexander Curry | 02 | Leeds Uni | 1:03.86 |
| 6 | 42 | David Miller | 99 | Bath Univ | 1:03.91 |
| 7 | 40 | Tyler Tombs | 05 | Chelmsford | 1:04.02 |
| 8 | 38 | Benjamin Green | 04 | Watford SC | 1:04.15 |
| 9 | 36 | Isaac Zawada | 05 | Teddington | 1:04.44 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 49 | Martin Smith | 04 | Bo Kirklees | 1:03.42 |
| 1 | 55 | Tom Beagley | 00 | Bath Univ | 1:03.07 |
| 2 | 61 | Ronny Hallett | 04 | Plymouth Lea | 1:02.31 |
| 3 | 67 | Jack Blair | 98 | Chesterfield | 1:01.49 |
| 4 | 73 | Panayiotis Panaretos | 02 | Swansea Uni | 59.57 |
| 5 | 70 | Samuel Neeld | 00 | Birm'ham Uni | 1:00.42 |
| 6 | 64 | Karnell Nunes-Smith | 04 | Orion | 1:02.06 |
| 7 | 58 | Rohan Smith | 04 | Skipton | 1:02.65 |
| 8 | 52 | Freddie Laws | 03 | West Norfolk | 1:03.24 |
| 9 | 46 | Adam Wong | 06 | Chelsea&West | 1:03.60 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 50 | Joseph Buxton | 03 | Reading | 1:03.36 |
| 1 | 56 | Ryan Griffiths | 03 | Co Sheffield | 1:03.02 |
| 2 | 62 | Kai Yuen | 02 | Co Birm'ham | 1:02.24 |
| 3 | 68 | Oliver Kettle | 04 | Bath Univ | 1:01.18 |
| 4 | 74 | Lawrence Palmer | 92 | Putteridge | 59.12 |
| 5 | 71 | Elliot Woodburn | 05 | Millfield | 1:00.34 |
| 6 | 65 | Pravin Mahendrakumar | 03 | Bromley | 1:02.02 |
| 7 | 59 | Yau Cheung Sin | 03 | Plymouth Lea | 1:02.58 |
| 8 | 53 | Donald Bisset | 01 | Gloucester | 1:03.12 |
| 9 | 47 | Cameron White | 02 | Uni of Nott | 1:03.59 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 51 | Nikolai Khutoryanskiy | 03 | Nova Cent'n | 1:03.29 |
| 1 | 57 | Benjamin Dinsdale | 00 | Winchester | 1:02.90 |
| 2 | 63 | Olivier Vedrenne | 05 | Co Norwich | 1:02.22 |
| 3 | 69 | Jacob Armon | 03 | Dumfries | 1:01.08 |
| 4 | 75 | Gregory Butler | 00 | Loughboro Un | 58.97 |
| 5 | 72 | Dominic Polling | 97 | Brighton | 59.67 |
| 6 | 66 | Matthew Rogers | 00 | Bromley | 1:01.65 |
| 7 | 60 | Gordon Lee | 03 | Hillingdon | 1:02.40 |
| 8 | 54 | Thomas Hamilton | 01 | Birm'ham Uni | 1:03.11 |
| 9 | 48 | Max Wass | 03 | Derventio | 1:03.52 |