EVENT 102 Boys 11/13 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 2 | Sebastian Lee | 11 | Co Derby | 1:24.10 |
| 4 | 4 | Archie Heron | 11 | Co Derby | 1:23.57 |
| 5 | 3 | Ben Atkinson | 12 | Co Derby | 1:23.82 |
| 6 | 1 | Patrick Welsh | 12 | Derventio | 1:24.55 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 6 | Matthew Jackson | 12 | Nova Cent'n | 1:23.00 |
| 2 | 8 | Kieran Howard | 11 | Nova Cent'n | 1:22.40 |
| 3 | 10 | Sammy Rahimzadeh | 12 | Nova Cent'n | 1:22.18 |
| 4 | 12 | Jake Armstrong | 12 | Nene Valley | 1:21.23 |
| 5 | 11 | Noah Rai | 11 | Nova Cent'n | 1:21.68 |
| 6 | 9 | Declan Luff | 11 | Leic Sharks | 1:22.40 |
| 7 | 7 | Luke Stevens | 11 | Leic Sharks | 1:22.98 |
| 8 | 5 | Lewis Warner | 12 | Nova Cent'n | 1:23.30 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 14 | Reuben Heywood | 12 | Louth | 1:20.96 |
| 2 | 16 | Adam Read | 12 | Nova Cent'n | 1:19.70 |
| 3 | 18 | Sean McCann | 12 | Co Leicester | 1:18.15 |
| 4 | 20 | Henry Pawson | 13 | NottmLeander | 1:16.80 |
| 5 | 19 | Stanley Beasley | 13 | Daventry | 1:16.85 |
| 6 | 17 | Connor Byron | 12 | Nova Cent'n | 1:18.80 |
| 7 | 15 | Joseph Browbank | 12 | Co Leicester | 1:19.83 |
| 8 | 13 | Oliver Silver | 11 | Nova Cent'n | 1:21.00 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 22 | Jack Robinson | 12 | Boston | 1:16.39 |
| 2 | 24 | James Dobney | 13 | Grantham | 1:15.76 |
| 3 | 26 | Samual Nicholls | 13 | Chesterfield | 1:15.66 |
| 4 | 28 | Thomas Polley | 11 | Nova Cent'n | 1:15.50 |
| 5 | 27 | Billy Reed | 12 | Grantham | 1:15.62 |
| 6 | 25 | Connor Wilcox | 13 | Nova Cent'n | 1:15.70 |
| 7 | 23 | Rico Bringeman | 12 | Boston | 1:16.32 |
| 8 | 21 | Joseph Lund | 13 | Deepings | 1:16.44 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 32 | Jack Stretton | 13 | Co Leicester | 1:14.96 |
| 2 | 38 | Finlay Moss | 13 | Long Eaton | 1:13.80 |
| 3 | 44 | Callum Kettlewell | 13 | Retford | 1:11.00 |
| 4 | 50 | Brandon Hotham | 13 | Chesterfield | 1:08.83 |
| 5 | 47 | Charlie Kaletha | 13 | Braunstone | 1:10.24 |
| 6 | 41 | Jody Gillott | 12 | Worksop | 1:12.20 |
| 7 | 35 | Max Morris | 13 | BelperMarlin | 1:14.57 |
| 8 | 29 | Harry Cardell | 13 | Deepings | 1:15.31 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 33 | Max Shaw | 12 | Northampton | 1:14.90 |
| 2 | 39 | Younis Peach | 13 | Northampton | 1:13.40 |
| 3 | 45 | William Turnock | 13 | Nova Cent'n | 1:10.80 |
| 4 | 51 | Jacob Whittle | 13 | Derventio | 1:06.90 |
| 5 | 48 | Liam Dawson | 12 | Derventio | 1:10.10 |
| 6 | 42 | Finley Bunhejee | 12 | Nova Cent'n | 1:11.60 |
| 7 | 36 | Samuel Smith | 12 | Northampton | 1:13.90 |
| 8 | 30 | Joseph Vickers | 12 | Boston | 1:15.00 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 34 | Thomas Currie | 13 | Northampton | 1:14.70 |
| 2 | 40 | Austin Johns | 13 | Co Leicester | 1:13.05 |
| 3 | 46 | Razvan Grumazescu | 13 | Northampton | 1:10.60 |
| 4 | 52 | Matthew Woodhall | 13 | Nova Cent'n | 1:06.60 |
| 5 | 49 | Jake Lee | 13 | Retford | 1:09.40 |
| 6 | 43 | Nathan Allen | 13 | Co Leicester | 1:11.06 |
| 7 | 37 | Callum Peel | 13 | Nova Cent'n | 1:13.81 |
| 8 | 31 | Daniel Kennedy | 13 | Co Leicester | 1:14.99 |