EVENT 6 Boys 12 Yrs/Under 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 1 | Tomas VALENZUELA-NIEDB | 11 | Co Cambridge | |
| 3 | 2 | Juan MODOLELL | 9 | Co Cambridge | |
| 4 | 3 | Nicholas RANA-BEADLE | 11 | Co Cambridge | |
| 5 | 4 | Francesco CLELAND FERD | 9 | Co Cambridge | |
| 6 | 5 | Liam DETHLEFSEN | 10 | Co Cambridge | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 6 | Heinrich KOTZENBERG | 9 | Co Cambridge | |
| 2 | 7 | Fabrizio CIMMARRUSTI | 10 | Co Cambridge | |
| 3 | 8 | John BURKILL | 11 | Co Cambridge | |
| 4 | 9 | Edward ORMSBY | 10 | Royston | |
| 5 | 10 | Charlie NAPTHEN | 10 | Co Cambridge | |
| 6 | 11 | Blake MATTHEWS | 10 | Royston | 1:05.87 |
| 7 | 12 | Ross DE WILDT | 9 | Co Cambridge | 1:03.07 |
| 8 | 13 | Csanad REHUS | 8 | Co Cambridge | 1:02.38 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 14 | Chariton CHANG | 9 | Co Cambridge | 1:02.30 |
| 2 | 15 | Justin BOUQUENIAUX | 11 | Bottisham | 55.28 |
| 3 | 16 | Jake CAMERON | 12 | Co Cambridge | 55.00 |
| 4 | 17 | Jack MOSSOP | 12 | Co Cambridge | 55.00 |
| 5 | 18 | George CARTER | 9 | Co Cambridge | 54.73 |
| 6 | 19 | Ryan HOWE | 11 | Co Cambridge | 54.60 |
| 7 | 20 | Edward ROUSE | 10 | Co Cambridge | 54.50 |
| 8 | 21 | Freddy MARSDEN | 12 | Bottisham | 53.99 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 23 | Sam KINCAID | 11 | Bottisham | 50.32 |
| 2 | 25 | Stirling DEMPSEY | 10 | Co Cambridge | 48.25 |
| 3 | 27 | Tristan VANDERMEER | 11 | Co Cambridge | 45.50 |
| 4 | 29 | Elliot WESTON | 10 | Co Cambridge | 40.91 |
| 5 | 28 | Austin HARROP | 11 | Co Cambridge | 45.35 |
| 6 | 26 | Adam MOKTADIR | 11 | Co Cambridge | 45.84 |
| 7 | 24 | Mateo VALENZUELA-NIEDB | 10 | Co Cambridge | 49.69 |
| 8 | 22 | Joshua ALBONE | 10 | Royston | 51.32 |