EVENT 12 Boy Open 200m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Thomas BURDOCK | 11 | Deepings | 4:15.70 |
| 4 | 2 | Michael BUNN | 11 | Lincoln Vulc | 4:09.00 |
| 5 | 3 | Joel SADLER | 11 | Grantham | 3:45.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Oscar DURANT | 11 | Grantham | 3:45.00 |
| 2 | 5 | Harry VICKERS | 14 | Lincoln Vulc | 3:42.08 |
| 3 | 6 | Luca HALLAM | 10 | Grantham | 3:37.20 |
| 4 | 7 | Jacob GIFFORD | 11 | Lincoln Vulc | 3:28.54 |
| 5 | 8 | Ashton HUNTER | 9 | Deepings | 3:20.00 |
| 6 | 9 | Adrian ELERTS | 12 | Grantham | 3:18.05 |
| 7 | 10 | Lewis SNOWSHALL | 12 | Lincoln Vulc | 3:17.95 |
| 8 | 11 | James CASH | 12 | Deepings | 3:12.73 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Henry SEAGROATT | 11 | Louth | 3:10.88 |
| 2 | 13 | William BURDOCK | 12 | Deepings | 3:01.80 |
| 3 | 14 | Jake ADAMS | 14 | Louth | 3:00.90 |
| 4 | 15 | Lewis TARVER | 13 | Deepings | 2:53.60 |
| 5 | 16 | Reuben TAYLOR | 15 | Loughborough | 2:47.70 |
| 6 | 17 | Jack HICKS | 12 | Lincoln Vulc | 2:44.58 |
| 7 | 18 | Zach HOPKINSON | 13 | Grantham | 2:42.71 |
| 8 | 19 | Jacob BRIERS | 14 | Deepings | 2:42.10 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 21 | William TAYLOR | 14 | Louth | 2:36.93 |
| 2 | 23 | Jack ZERAVICA | 14 | Grantham | 2:30.30 |
| 3 | 25 | Christian O'MALLEY | 15 | Lincoln Vulc | 2:25.08 |
| 4 | 27 | Jack GOLDFINCH | 16 | Loughborough | 2:20.14 |
| 5 | 26 | Thomas MACMANARD | 15 | Loughborough | 2:24.83 |
| 6 | 24 | Cade DEAVES | 16 | Grantham | 2:27.32 |
| 7 | 22 | Daniel DEGNAN | 13 | Grantham | 2:36.20 |
| 8 | 20 | Jacob FISH | 12 | Grantham | 2:38.15 |