| Joseph Bampton | HAQS | 44.63 | 1:33.70 | |
| Jack Vivian | EATS | 44.12 | 1:34.02 | |
| Joel Frank | WCPS | 44.92 | 1:34.72 | |
| Ben Jones | LSSS | 45.17 | 1:34.81 | |
| Matthew Wilson | FANS | 45.66 | 1:37.03 | |
| Joshua Lay | BBFS | 46.50 | 1:37.95 | |
| Ryan Kahr | BBFS | 47.25 | 1:38.90 | |
| Joshua Bosley | HAQS | 47.43 | 1:41.06 | |
| James Nash | PORS | 1:41.76 | ||
| Christian Hosking | WCPS | 47.57 | 1:41.87 | |
| Elliott Olsen | COSS | 50.90 | 1:42.17 | |
| Peter Coleman | HARS | 1:43.02 | 1:43.02 | |
| Luke Hannan | RURS | 46.92 | 1:43.07 | |
| Louis Mathiesen | WCPS | 50.64 | 1:43.61 | |
| Hector Sharp | RURS | 51.17 | 1:44.64 | |
| Gary Benson | HARS | 51.29 | 1:48.48 | |
| Robert Patrick | GOSS | 1:49.28 | 1:49.28 | |
| Connor Stubbs | GOSS | 49.70 | 1:49.43 | |
| Alexander Skinner | GOSS | 1:49.86 | ||
| Thomas Heath | WCPS | 1:53.37 | 1:53.37 | |
| Harry Dawkins | FANS | 1:58.32 | 1:58.32 | |
| Omar Bourak | RURS | 56.01 | 1:58.42 | |
| Jack Jacobs | LSSS | 49.37 | DQ:Alternating fly legs | |
| Thomas Austin | HVWS | 1:41.59 | DQ:Alt legs on fly/breast legs not in same horiz p | |
| Alexander Benbow | ALTS | DQ:Fly arms not recovering over water together |