EVENT 205 Boys 50m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Daniel GODDARD | 8 | Grantham | |
| 4 | 2 | Freddie HIRST | 9 | Grantham | |
| 5 | 3 | Ralph NEWTON | 9 | Grantham | |
| 6 | 4 | James BACON | 10 | Grantham | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Benjamin SHEARN | 9 | Grantham | 55.34 |
| 2 | 6 | William PENNOCK | 9 | Grantham | 55.05 |
| 3 | 7 | Alex NEVARD | 11 | Grantham | 50.38 |
| 4 | 8 | Toby EDMONDSON | 9 | Grantham | 47.69 |
| 5 | 9 | Thomas KINNEAR | 13 | Grantham | 47.58 |
| 6 | 10 | Woody CLARK | 9 | Grantham | 45.73 |
| 7 | 11 | Derrin BROCKLEBANK | 9 | Grantham | 44.81 |
| 8 | 12 | Austin CHEN-REES | 10 | Grantham | 44.40 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | Benjamin GODDARD | 10 | Grantham | 44.03 |
| 2 | 14 | M PARAPIJONAVICIUS | 10 | Grantham | 43.79 |
| 3 | 15 | Barnaby DURANT | 10 | Grantham | 41.70 |
| 4 | 16 | Oscar CHEN REES | 11 | Grantham | 41.37 |
| 5 | 17 | George LEONARD | 11 | Grantham | 40.96 |
| 6 | 18 | Henry DOLAN | 10 | Grantham | 40.86 |
| 7 | 19 | Thomas HILLSON | 10 | Grantham | 39.20 |
| 8 | 20 | Leo BARNETT | 11 | Grantham | 39.17 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | Elliot GLEAVE | 10 | Grantham | 38.30 |
| 2 | 22 | Yu Ching CHEUNG | 12 | Grantham | 38.11 |
| 3 | 23 | A BREARLEY-NEWSOME | 12 | Grantham | 37.78 |
| 4 | 24 | Joshua KIM | 11 | Grantham | 36.70 |
| 5 | 25 | Samuel NICHOLS | 11 | Grantham | 35.95 |
| 6 | 26 | Alfie HAIGH | 14 | Grantham | 35.61 |
| 7 | 27 | Ben CARLYLE | 13 | Grantham | 34.36 |
| 8 | 28 | Joel SADLER | 12 | Grantham | 33.63 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 30 | James NICHOLS | 14 | Grantham | 31.32 |
| 2 | 33 | Jacob FISH | 14 | Grantham | 27.78 |
| 3 | 35 | Owen HATHWAY | 17 | Grantham | 26.68 |
| 4 | 37 | Joshua CLARKE | 15 | Grantham | 25.20 |
| 5 | 36 | James DOBNEY | 19 | Grantham | 26.07 |
| 6 | 34 | Zach HOPKINSON | 14 | Grantham | 27.70 |
| 7 | 32 | Daniel DEGNAN | 15 | Grantham | 28.15 |
| 8 | 29 | Oscar DURANT | 12 | Grantham | 33.45 |