EVENT 406 Boys 12 Yrs/Under 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Luke Pye | 10 | Co Sund'land | 2:05.30 |
| 1 | 3 | Oscar Craig | 11 | Copeland | 1:53.20 |
| 2 | 5 | Ellis Rickaby | 12 | South Tyne | 1:45.00 |
| 3 | 7 | William Maw | 10 | South Tyne | 1:39.60 |
| 4 | 9 | James Fewster | 11 | Tynemouth | 1:38.80 |
| 5 | 8 | James King | 12 | Gates &Whick | 1:38.90 |
| 6 | 6 | Elijah Stannard | 10 | Tynemouth | 1:40.60 |
| 7 | 4 | Owen Minnican | 11 | Barrow | 1:46.99 |
| 8 | 2 | Nathan Roberts | 11 | Billingham | 1:56.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 11 | Jamie Currie | 12 | North Tyne | 1:38.40 |
| 1 | 13 | Lewis Maxwell | 10 | Derwentside | 1:34.70 |
| 2 | 15 | Joel Sinclair | 11 | Carlisle Aq | 1:31.96 |
| 3 | 17 | Matthew Whitehead | 11 | Carlisle Aq | 1:30.60 |
| 4 | 19 | Harrison Neal | 12 | KPSC, NZ | 1:28.95 |
| 5 | 18 | Oscar Wilson | 12 | Alnwick Dol | 1:29.40 |
| 6 | 16 | Joe Whelan | 11 | Co Sund'land | 1:31.10 |
| 7 | 14 | Jordon Dobbins | 12 | Derwentside | 1:32.10 |
| 8 | 12 | Theo Tindall | 12 | Carlisle Aq | 1:38.33 |
| 9 | 10 | Joseph Smith | 11 | Co Newcastle | 1:38.60 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 21 | Joseph Robins | 11 | Co Sund'land | 1:27.90 |
| 1 | 23 | Henry Willis | 12 | Tynemouth | 1:26.60 |
| 2 | 25 | Jared Armstrong | 12 | SwimTrafford | 1:25.60 |
| 3 | 27 | Aidan Brown | 11 | Bo Stockton | 1:22.32 |
| 4 | 29 | Dylan Pinnock | 12 | South Tyne | 1:17.60 |
| 5 | 28 | Daniel Butler | 11 | Derwentside | 1:19.16 |
| 6 | 26 | Ben Hutchinson | 12 | Co Sund'land | 1:23.80 |
| 7 | 24 | Jack Harwood | 11 | Billingham | 1:25.90 |
| 8 | 22 | Aaron Beckford | 11 | Derwentside | 1:27.66 |
| 9 | 20 | Ben Samuels | 11 | South Tyne | 1:28.30 |