EVENT 207 Boy Open 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 1 | Isaac JOHNSTONE | 16 | S6 | Bo Kirklees | 1:00.00 |
| 1 | 3 | George GITTINS | 9 | | Stokesley | 58.00 |
| 2 | 6 | Mani PALMER | 14 | | Bo Kirklees | 51.20 |
| 3 | 8 | Thomas HORNE | 11 | | Co Leeds | 50.95 |
| 4 | 10 | Sam WILSON | 11 | | Burnley BOBC | 50.80 |
| 5 | 9 | Matthew BATES | 13 | | Leyland Barr | 50.88 |
| 6 | 7 | Jack WADE | 10 | | Bo Kirklees | 51.02 |
| 7 | 5 | Alfie LIPTROT | 11 | | Chorley Marl | 56.72 |
| 8 | 2 | Myles BEST | 9 | | Leyland Barr | 59.80 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 12 | Oliver NEWEY | 10 | | Bo Kirklees | 50.10 |
| 1 | 15 | Max CLARK | 11 | | Co Leeds | 46.80 |
| 2 | 17 | Max ROBERTS | 11 | | Leyland Barr | 46.70 |
| 3 | 19 | Benjamin HANGULA | 11 | | Co Wakefield | 46.20 |
| 4 | 21 | Lucas MAKEPEACE | 12 | | Bo Kirklees | 45.53 |
| 5 | 20 | Oliver OWENS | 11 | | Leyland Barr | 45.80 |
| 6 | 18 | Oliver NIXON | 10 | | Biddulph | 46.40 |
| 7 | 16 | James TUNSTALL | 13 | | Leyland Barr | 46.70 |
| 8 | 13 | Stephen GITTINS | 11 | | Stokesley | 50.00 |
| 9 | 11 | Daniel RYKOWSKI | 10 | | Leyland Barr | 50.30 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 23 | Robert BARRETT | 12 | | Burnley BOBC | 44.60 |
| 1 | 25 | Oliver BARKER | 9 | | Co Leeds | 43.70 |
| 2 | 27 | Hogan LAM | 11 | | Co Leeds | 43.60 |
| 3 | 29 | Michal ZWARDON | 12 | | Burnley BOBC | 42.80 |
| 4 | 31 | Thomas OWENS | 9 | | Leyland Barr | 41.50 |
| 5 | 30 | Olaf GRUDOWSKI | 11 | | Co Leeds | 41.70 |
| 6 | 28 | Demilade AYEMOWA | 12 | | Co Leeds | 43.10 |
| 7 | 26 | Archie HONEY | 11 | | Blackpool Aq | 43.60 |
| 8 | 24 | Jack MITCHELL | 12 | | Bo Kirklees | 44.30 |
| 9 | 22 | George BRADY | 13 | | Leyland Barr | 44.80 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 34 | Alex MORECROFT | 13 | | Bo Kirklees | 41.43 |
| 1 | 36 | Alfie NEWISS | 10 | | Bo Kirklees | 40.90 |
| 2 | 38 | Zac EDGE | 9 | | Bo Kirklees | 40.83 |
| 3 | 40 | Leo LI | 10 | | Co Leeds | 40.40 |
| 4 | 42 | Layton RICHARDSON | 13 | | Chorley Marl | 39.53 |
| 5 | 41 | Christian CORNELL | 12 | | Stokesley | 39.90 |
| 6 | 39 | Noah DARNELL | 11 | | Co Leeds | 40.70 |
| 7 | 37 | Hudson SMITH | 11 | | Co Leeds | 40.90 |
| 8 | 35 | George KING | 10 | | Co Leeds | 41.40 |
| 9 | 32 | Harrison WAKE | 10 | | Co Leeds | 41.50 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 44 | Joel PLANT | 11 | | Biddulph | 39.20 |
| 1 | 47 | Charlie HORNE | 13 | | Co Leeds | 39.10 |
| 2 | 49 | Rory KING | 12 | | Co Leeds | 38.88 |
| 3 | 51 | Robson HART | 9 | | Co Leeds | 38.50 |
| 4 | 53 | Oliver BARRETT | 11 | | Co Leeds | 38.20 |
| 5 | 52 | Abdullah MOKHLISSE | 13 | | Co Leeds | 38.20 |
| 6 | 50 | Camron WHITTAKER | 14 | | Chorley Marl | 38.57 |
| 7 | 48 | Jamie WEETMAN | 13 | | Leyland Barr | 38.90 |
| 8 | 46 | Sebastian HAILWOOD | 12 | | Leyland Barr | 39.10 |
| 9 | 43 | Benjamin MORRIS | 13 | | Co Leeds | 39.40 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 55 | William SHEARS | 13 | | Chorley Marl | 37.56 |
| 1 | 57 | Nicholas CASS | 12 | | Bo Kirklees | 37.50 |
| 2 | 59 | Thomas HILL | 13 | | Bo Kirklees | 37.30 |
| 3 | 61 | Oscar O'DONNELL | 10 | | Co Leeds | 37.10 |
| 4 | 63 | Ryan MILNER | 13 | | Co Leeds | 36.88 |
| 5 | 62 | Reggie SIMCOCK | 13 | | Biddulph | 37.00 |
| 6 | 60 | Benji SUTCLIFFE | 11 | | Ramsbottom | 37.20 |
| 7 | 58 | Dean NENOV | 13 | | Co Leeds | 37.40 |
| 8 | 56 | Callum FOZARD | 11 | | Co Leeds | 37.50 |
| 9 | 54 | Hussein KESSERWAN | 11 | | Bo Kirklees | 38.01 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 65 | Ed PEARSON | 11 | | Io Man | 36.78 |
| 1 | 67 | Reggie SPENCE | 13 | | Co Leeds | 36.20 |
| 2 | 69 | Sebastian HUNTER | 12 | | Co Leeds | 35.70 |
| 3 | 71 | Hal SHUTTLEWORTH | 14 | | Burnley BOBC | 35.40 |
| 4 | 73 | Yassin ELSHAZLY | 14 | | Co Leeds | 35.20 |
| 5 | 72 | Ethan CONROY | 14 | | Burnley BOBC | 35.30 |
| 6 | 70 | Reuben HARRISON | 12 | | Co Leeds | 35.40 |
| 7 | 68 | James FARNAN | 12 | | Io Man | 35.80 |
| 8 | 66 | Gordon BALLANTYNE | 14 | | Leyland Barr | 36.40 |
| 9 | 64 | Andrew HILL | 12 | | Biddulph | 36.81 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 76 | Arthur OWENS | 13 | | Co Leeds | 33.80 |
| 1 | 78 | Connor MCCULLEN | 12 | | Co Leeds | 33.40 |
| 2 | 80 | Noah CARTLIDGE | 12 | | Biddulph | 33.30 |
| 3 | 82 | Alex OLCHOWIK | 13 | | Co Leeds | 32.30 |
| 4 | 84 | Oliver BROMPTON | 14 | | Co Leeds | 32.13 |
| 5 | 83 | Owen WILSON | 12 | | Burnley BOBC | 32.30 |
| 6 | 81 | Ben COOK | 13 | | Burnley BOBC | 32.80 |
| 7 | 79 | Hayden LAM | 12 | | Co Leeds | 33.40 |
| 8 | 77 | Rhys POWNALL | 13 | | Leyland Barr | 33.70 |
| 9 | 75 | Luke JENKINSON | 14 | | Co Wakefield | 34.30 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 86 | Harvey STOKER | 14 | | Bo Kirklees | 31.90 |
| 1 | 88 | Theo WHITTAKER | 15 | | Burnley BOBC | 31.20 |
| 2 | 90 | Oscar DEVAAL | 13 | | Biddulph | 31.11 |
| 3 | 92 | Ethan MCGUINNESS | 13 | | Ramsbottom | 30.99 |
| 4 | 94 | Oliver STEELE | 15 | | Co Leeds | 30.60 |
| 5 | 93 | Oscar HODGSON | 13 | | Carlisle Aq | 30.70 |
| 6 | 91 | Lawrence NDADAYE | 16 | | Stretford | 31.00 |
| 7 | 89 | Louis CASS | 15 | | Bo Kirklees | 31.15 |
| 8 | 87 | Charlie WILCOCK | 13 | | Ramsbottom | 31.50 |
| 9 | 85 | Oliver NUTTER | 14 | | Burnley BOBC | 32.10 |
| Heat Number - 10 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 96 | Tin Ho CHEUNG | 14 | | Co Leeds | 30.50 |
| 1 | 98 | Jaeden LIM | 15 | | Stretford | 30.10 |
| 2 | 100 | Louis GRESSWELL | 17 | | Penrith | 29.90 |
| 3 | 102 | Samuel SUTCLIFFE | 13 | | Ramsbottom | 29.63 |
| 4 | 104 | Samuel JACKSON | 14 | | Bo Kirklees | 29.40 |
| 5 | 103 | Matthew ROBERTS | 16 | | Co Leeds | 29.46 |
| 6 | 101 | Andrew ONOFREI | 14 | | StaffordApex | 29.80 |
| 7 | 99 | Samuel HILL | 13 | | Co Leeds | 30.00 |
| 8 | 97 | Jamie BALL | 18 | | Burnley BOBC | 30.36 |
| 9 | 95 | Eber MEYER CLAYTON | 16 | | Stretford | 30.60 |
| Heat Number - 11 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 106 | Daniel CLIPSHAM | 16 | | Co Wakefield | 28.60 |
| 1 | 108 | Daniel RANSOM | 14 | | Co Leeds | 27.70 |
| 2 | 110 | James ROBINSON | 17 | | Co Leeds | 27.52 |
| 3 | 112 | Gabriel SHEPHERD | 14 | | Co Leeds | 27.20 |
| 4 | 114 | Charlie BROOME | 18 | | Co Leeds | 26.13 |
| 5 | 113 | Matthew JUST | 14 | | Co Leeds | 26.99 |
| 6 | 111 | Ben SHELTON | 18 | | Co Leeds | 27.20 |
| 7 | 109 | Cohen STEPHENSON | 17 | | Co Leeds | 27.70 |
| 8 | 107 | Ethan STANNARD | 17 | | Stokesley | 28.00 |
| 9 | 105 | Callum RAVEN | 14 | | Co Leeds | 29.30 |