EVENT 104 Mens Open 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 3 | 2 | Joshua FAIRCHILD | 19 | SB14 | Co Coventry | 1:25.00 |
| 4 | 4 | Joe BAGLEY | 14 | | Co Derby | 1:12.12 |
| 5 | 3 | Tom ADAMS | 15 | | Deepings | 1:12.30 |
| 6 | 1 | Connor BOYFIELD | 19 | SB9 | Boston | 1:27.81 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 6 | Luke SKELDING | 15 | | Co Derby | 1:11.75 |
| 2 | 8 | Alex NORRIS | 15 | | Chesterfield | 1:11.62 |
| 3 | 10 | William BROOKES | 15 | | BelperMarlin | 1:10.25 |
| 4 | 12 | James WEBSTER | 17 | | Long Eaton | 1:09.99 |
| 5 | 11 | Lewis JONES | 15 | | Chase | 1:10.10 |
| 6 | 9 | James NEWMAN | 15 | | Co Leicester | 1:10.40 |
| 7 | 7 | Ryan GRIFFITHS | 14 | | Co Coventry | 1:11.70 |
| 8 | 5 | Joshua CURTIS | 15 | | Braunstone | 1:11.90 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 14 | Samuel PEARSON | 21 | | Long Eaton | 1:09.90 |
| 2 | 16 | Daniel WILSON | 18 | | Nova Cent'n | 1:09.70 |
| 3 | 18 | Harvey FREEMAN | 13 | | Northampton | 1:09.50 |
| 4 | 20 | Jacob ELLIOTT | 15 | | Bromsgrove | 1:09.45 |
| 5 | 19 | Dominic BOOLS | 14 | | Nova Cent'n | 1:09.50 |
| 6 | 17 | George SMITH | 13 | | Ellesmere Co | 1:09.66 |
| 7 | 15 | Louis METSELAAR | 15 | | Deepings | 1:09.70 |
| 8 | 13 | William BRIGHTY | 16 | | Melton M'bry | 1:09.90 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 24 | Harvey LLOYD | 16 | | Worcester | 1:08.80 |
| 2 | 30 | Campbell STEPHEN | 16 | | Co Derby | 1:07.50 |
| 3 | 36 | Joshua PEMBERTON | 17 | | Derventio | 1:05.40 |
| 4 | 42 | Gregory BUTLER | 17 | | Co Derby | 1:02.90 |
| 5 | 39 | Joshua HOROBIN | 18 | | BelperMarlin | 1:05.00 |
| 6 | 33 | Samuel HALL | 17 | | Worcester | 1:07.06 |
| 7 | 27 | Jamie KETTLE | 17 | | Co Leicester | 1:08.24 |
| 8 | 21 | Stephen STANLEY | 18 | | StaffordApex | 1:09.44 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 25 | Ryan WILCOX | 15 | | Nova Cent'n | 1:08.70 |
| 2 | 31 | Samuel NEELD | 17 | | Wrekin Coll | 1:07.40 |
| 3 | 37 | Rhys TAYLOR | 17 | | Nova Cent'n | 1:05.29 |
| 4 | 43 | Robert LANCASTER | 20 | | Loughboro Un | 1:01.40 |
| 5 | 40 | Aaron FLYNN | 27 | | Wellingboro | 1:04.70 |
| 6 | 34 | Hedley BUTLIN | 18 | | Co Lincoln P | 1:06.70 |
| 7 | 28 | Jackson O'ROURKE | 15 | | Northampton | 1:08.10 |
| 8 | 22 | Matthew HARRIS | 15 | | Royal Wolv | 1:09.40 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 26 | Thomas WHITE | 15 | | Nova Cent'n | 1:08.30 |
| 2 | 32 | Toby ARNOLD | 16 | | Derventio | 1:07.30 |
| 3 | 38 | James BILBAO | 16 | | Ellesmere Co | 1:05.20 |
| 4 | 44 | Chris STEEPLES | 25 | | Derventio | 59.70 |
| 5 | 41 | Jack BLAIR | 19 | | Chesterfield | 1:03.75 |
| 6 | 35 | Jacob HENSON | 18 | | Braunstone | 1:06.30 |
| 7 | 29 | Billy WOTTON | 14 | | Ellesmere Co | 1:07.70 |
| 8 | 23 | James ARDRON | 22 | | Braunstone | 1:09.20 |