EVENT 34 Men MC 200m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Thomas BURDOCK | 11 | Deepings | 4:58.50 |
| 4 | 2 | Noah SKINNER | 11 | Deepings | 4:35.28 |
| 5 | 3 | Arthur BREARLEY-NEWSOM | 11 | Grantham | 4:12.06 |
| 6 | 4 | Arran CECCOTTI | 11 | Lincoln Vulc | 4:10.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Jonathan GBYLICZEK | 10 | Lincoln Vulc | 4:10.00 |
| 2 | 6 | Lloyd SWABY | 12 | Lincoln Vulc | 4:00.00 |
| 3 | 7 | Samuel NICHOLS | 10 | Grantham | 4:00.00 |
| 4 | 8 | Fabian KOLASA | 11 | Grantham | 3:53.34 |
| 5 | 9 | Joel SADLER | 11 | Grantham | 3:50.00 |
| 6 | 10 | William BURDOCK | 12 | Deepings | 3:46.40 |
| 7 | 11 | Ellis SILK | 12 | Louth | 3:40.00 |
| 8 | 12 | Henry BUCKLEY | 13 | Louth | 3:32.51 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Archie FRENCH | 12 | Lincoln Vulc | 3:21.01 |
| 2 | 17 | James NICHOLS | 13 | Grantham | 3:05.14 |
| 3 | 19 | Jacob BRIERS | 14 | Deepings | 2:52.35 |
| 4 | 21 | Zach HOPKINSON | 13 | Grantham | 2:49.13 |
| 5 | 20 | Jack HUGHES | 14 | Lincoln Vulc | 2:51.18 |
| 6 | 18 | Jake ADAMS | 14 | Louth | 2:56.78 |
| 7 | 16 | Darell YEOH | 12 | Loughborough | 3:13.43 |
| 8 | 13 | William KITE | 12 | Louth | 3:31.24 |