EVENT 9 Boy Open 50m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 2 | 1 | Max CHALKER | 12 | Weymouth | 50.28 |
| 3 | 2 | Harry HENSHAW | 12 | West Dorset | 49.00 |
| 4 | 3 | Max PALMER | 14 | Poole | 48.75 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 4 | Alfie POLLARD | 12 | S Bournem'th | 47.90 |
| 2 | 5 | Edward SMITH | 12 | Bridport Bar | 47.30 |
| 3 | 6 | Seth JORDAN | 11 | Bridport Bar | 46.66 |
| 4 | 7 | Toby SIMS | 13 | Seagulls SC | 44.13 |
| 5 | 8 | Ho Wai TANG | 13 | S Bournem'th | 43.70 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 9 | Reece EMERY | 12 | Blandford | 43.22 |
| 2 | 10 | Luca SLOAN | 13 | Weymouth | 42.70 |
| 3 | 11 | Kit FREEMAN | 11 | Blandford | 41.79 |
| 4 | 12 | Jenson LOWE | 12 | Poole | 41.59 |
| 5 | 13 | Coby YOUNG | 11 | Poole | 41.48 |
| 6 | 14 | Rohan VERCOE | 12 | Bridport Bar | 40.89 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 15 | Theo MCCARTHY | 09 | Bridport Bar | 40.70 |
| 2 | 16 | Brodie ROBERTS | 12 | Seagulls SC | 40.69 |
| 3 | 17 | Jack FEILDER | 12 | Poole | 40.44 |
| 4 | 18 | Leo DOWNTON | 12 | Blandford | 40.34 |
| 5 | 19 | Harrison O'HARA | 11 | Poole | 39.94 |
| 6 | 20 | Dylan HANGER | 11 | Weymouth | 39.25 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 21 | Callum CRUTCHLEY | 09 | S Bournem'th | 39.05 |
| 2 | 22 | Arthur KENYON-BUTLER | 10 | Blandford | 38.97 |
| 3 | 23 | Alfie CRANE | 10 | Seagulls SC | 38.59 |
| 4 | 24 | Harry JOHNSON | 10 | Blandford | 38.14 |
| 5 | 25 | Euan MCPHAIL | 10 | West Dorset | 38.14 |
| 6 | 26 | Archie RAND | 10 | Seagulls SC | 38.14 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 27 | Gethin WILSON | 10 | Poole | 38.13 |
| 2 | 28 | Tommy GLEESON | 10 | Seagulls SC | 38.10 |
| 3 | 29 | Henry WALKER | 11 | Poole | 38.05 |
| 4 | 30 | Oliver COE | 12 | Poole | 37.86 |
| 5 | 31 | Liam DETRICK | 10 | Poole | 37.69 |
| 6 | 32 | Finlay LAWS | 10 | S Bournem'th | 37.52 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 33 | Geoffrey GOODRICK | 09 | Weymouth | 37.39 |
| 2 | 34 | Billy LEWIS | 10 | S Bournem'th | 37.28 |
| 3 | 35 | Leo IBBOTSON | 10 | Wareham | 37.27 |
| 4 | 36 | Nicolas GBUREK | 09 | Weymouth | 37.26 |
| 5 | 37 | Samuel ESCOTT | 10 | Poole | 36.95 |
| 6 | 38 | George DEFRIES | 09 | Seagulls SC | 36.58 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 40 | Miron WOZNIAK | 09 | Blandford | 35.94 |
| 2 | 42 | Riley HAWKINS | 07 | Bridport Bar | 35.29 |
| 3 | 44 | Lawrence GOODRICK | 07 | Weymouth | 33.82 |
| 4 | 43 | Konner BURGHART | 06 | S Bournem'th | 34.25 |
| 5 | 41 | Jacka WARE | 07 | S Bournem'th | 35.48 |
| 6 | 39 | Elliot WARE | 09 | S Bournem'th | 36.16 |