EVENT 315 Boys Open 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Frederick OXSPRING | 11 | Coalville | 2:15.00 |
| 2 | 3 | Thomas CHAMBERLAIN | 12 | Loughborough | 2:02.96 |
| 3 | 5 | Charles SNEESBY | 12 | Leicester Ne | 1:57.78 |
| 4 | 7 | Samuel FOVARGUE | 12 | South Lincs | 1:54.75 |
| 5 | 6 | Bhaveshsingh PARMESSUR | 10 | Leicester Ne | 1:55.74 |
| 6 | 4 | Benjamin ROWLEY | 10 | Shrewsbury | 2:02.59 |
| 7 | 2 | Willem MUDDIMER | 11 | Loughborough | 2:03.91 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 9 | William FRANCIS | 12 | Nova Cent'n | 1:47.12 |
| 2 | 11 | Francis BARNETT | 13 | Deepings | 1:44.97 |
| 3 | 13 | Miles HATCH | 12 | Co Leicester | 1:44.03 |
| 4 | 15 | Matthew JACKSON | 11 | Nova Cent'n | 1:43.04 |
| 5 | 14 | Edward SKELLS | 12 | South Lincs | 1:43.93 |
| 6 | 12 | Sammy RAHIMZADEH | 11 | Nova Cent'n | 1:44.13 |
| 7 | 10 | Lewis NEWCOMBE | 11 | Co Leicester | 1:47.10 |
| 8 | 8 | Callum PIGGOTT | 12 | Shrewsbury | 1:52.60 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 17 | Oliver AFIA | 12 | Nova Cent'n | 1:41.62 |
| 2 | 19 | Owen THOMPSON | 14 | Shrewsbury | 1:41.20 |
| 3 | 21 | Hou Yu LEI | 11 | Nova Cent'n | 1:36.80 |
| 4 | 23 | Atticus STRICKLAND | 13 | South Lincs | 1:36.46 |
| 5 | 22 | Samuel SMITH | 11 | Kettering | 1:36.62 |
| 6 | 20 | Benjamin BRIGGS | 14 | Deepings | 1:37.92 |
| 7 | 18 | Jenson JOHNS | 10 | Co Leicester | 1:41.20 |
| 8 | 16 | Adam TILLEY | 13 | Co Leicester | 1:42.99 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 25 | Declan GUEST | 14 | Bramcote | 1:35.79 |
| 2 | 27 | Lewis ROUNCE | 12 | Nova Cent'n | 1:33.60 |
| 3 | 29 | Charlie KALETHA | 12 | Co Leicester | 1:31.87 |
| 4 | 31 | Samuel THOMAS | 13 | Corby | 1:27.80 |
| 5 | 30 | Joshua WARD | 14 | Co Leicester | 1:29.59 |
| 6 | 28 | Andrew HALL | 13 | Nova Cent'n | 1:33.50 |
| 7 | 26 | James DOBNEY | 12 | Grantham | 1:34.97 |
| 8 | 24 | Joseph LUND | 12 | Deepings | 1:36.37 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 33 | Stewart MAIR | 31 | Leicester Ne | 1:24.48 |
| 2 | 35 | Nathan ALLEN | 12 | Co Leicester | 1:23.90 |
| 3 | 37 | Daniel GRINDLEY | 15 | Shrewsbury | 1:22.40 |
| 4 | 39 | Samuel TOMLINSON | 15 | Leic Peng | 1:20.40 |
| 5 | 38 | William BRIGHTY | 15 | Melton M'bry | 1:21.02 |
| 6 | 36 | Louis METSELAAR | 14 | Deepings | 1:22.57 |
| 7 | 34 | Jonathan HARRISON | 15 | Coalville | 1:24.00 |
| 8 | 32 | Christopher SNEESBY | 14 | Co Leicester | 1:27.60 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 41 | Luke BLANCHARD | 15 | South Lincs | 1:19.74 |
| 2 | 43 | Robbie JOWETT | 17 | Shrewsbury | 1:18.35 |
| 3 | 45 | Joshua CURTIS | 14 | Co Leicester | 1:12.00 |
| 4 | 47 | Jacob HENSON | 17 | Braunstone | 1:07.99 |
| 5 | 46 | Rhys CHILES | 17 | Co Leicester | 1:11.20 |
| 6 | 44 | Caleb O'BRIEN | 15 | Corby | 1:16.70 |
| 7 | 42 | Benjamin BEEDELL | 14 | Deepings | 1:19.53 |
| 8 | 40 | Cameron HALEY | 16 | Leic Sharks | 1:19.80 |