EVENT 503 Men Open 200m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Finn Reed | 15 | Loughborough | 2:45.20 |
| 4 | 4 | Christopher Oliver | 15 | Long Eaton | 2:44.24 |
| 5 | 3 | Jacob Milward | 15 | Nova Cent'n | 2:44.98 |
| 6 | 1 | Joseph Lauda | 13 | Repton | 2:45.86 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Zach Hopkinson | 13 | Grantham | 2:40.20 |
| 2 | 14 | Evan Hawley | 15 | Nova Cent'n | 2:35.90 |
| 3 | 20 | Oliver Oxley | 16 | Co Leicester | 2:31.10 |
| 4 | 26 | Nikolai Khutoryanskiy | 19 | Nova Cent'n | 2:21.56 |
| 5 | 23 | Paul Page | 15 | Co Leicester | 2:28.24 |
| 6 | 17 | Kieran Howard | 16 | Radford | 2:33.35 |
| 7 | 11 | Jacob Hodkinson | 15 | Bassetlaw SS | 2:39.52 |
| 8 | 5 | Sam Macer | 14 | Repton | 2:43.11 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | Aman Thethy | 14 | Rushden | 2:40.14 |
| 2 | 15 | Cole Stevens | 15 | Chesterfield | 2:35.90 |
| 3 | 21 | Jacob Hamblen | 17 | Derventio | 2:28.82 |
| 4 | 27 | Jack Blair | 24 | Chesterfield | 2:15.36 |
| 5 | 24 | Henry Crust | 17 | Co Lincoln P | 2:24.00 |
| 6 | 18 | James Dobney | 18 | Grantham | 2:31.98 |
| 7 | 12 | Oliver Richmond | 14 | Nova Cent'n | 2:37.40 |
| 8 | 6 | Manav Mistry | 15 | Northampton | 2:41.60 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Harrison Clarke | 14 | Nova Cent'n | 2:39.70 |
| 2 | 16 | George Cummings | 15 | NottmLeander | 2:35.50 |
| 3 | 22 | Oscar Dodds | 16 | Co Leicester | 2:28.76 |
| 4 | 28 | Callum Melville | 16 | Nova Cent'n | 2:12.50 |
| 5 | 25 | Oliver Covill | 17 | Co Leicester | 2:22.30 |
| 6 | 19 | Harry Brancham | 16 | Bassetlaw SS | 2:31.10 |
| 7 | 13 | Niklas Saukko-Paavola | 14 | Nova Cent'n | 2:37.10 |
| 8 | 7 | Luke Chambers | 14 | Nova Cent'n | 2:41.22 |