EVENT 121 Boys 14/15 Yrs 100m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Walter Hackett | 14 | Bedfordshire | 59.14 |
| 2 | 3 | Miles Farrington | 15 | Wiltshire | 57.60 |
| 3 | 5 | Alexander Rees | 15 | Shropshire | 57.48 |
| 4 | 7 | Pierce Greening | 14 | Cumbria | 56.17 |
| 5 | 6 | Charlie Varker | 14 | Cornwall | 57.12 |
| 6 | 4 | Llion Myers | 14 | Swim Wales W | 57.57 |
| 7 | 2 | Muhammed Bukhari | 15 | Warwicks | 58.08 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 9 | Jamie Owen | 15 | Berks&SBucks | 55.60 |
| 1 | 11 | Finn Nicholl | 15 | Staffs | 55.28 |
| 2 | 13 | Thomas Wyatt | 15 | Derbyshire | 54.00 |
| 3 | 15 | William Barber | 15 | Lincolnshire | 53.20 |
| 4 | 17 | Jake Moxham | 15 | Cambs | 51.80 |
| 5 | 16 | Edward Mildred | 14 | Northants | 51.90 |
| 6 | 14 | Reese Housden | 15 | Herts | 53.64 |
| 7 | 12 | William Gearey | 14 | Worcs | 55.10 |
| 8 | 10 | Ben Blowers | 15 | Norfolk | 55.60 |
| 9 | 8 | Alex Cohoon | 15 | Gloucs | 55.69 |