EVENT 503 Mens MC 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 3 | Yoav Valinsky | 28 | S6 | Israel | 1:34.07 |
| 1 | 7 | Benjamin Grainger | 13 | S10 | Io Man | 1:24.03 |
| 2 | 11 | Jack Sheffield | 14 | S14 | Co Salford | 1:20.15 |
| 3 | 15 | Tom Piggott | 16 | S10 | Shrewsbury | 1:15.10 |
| 4 | 19 | Liam Spence | 16 | S14 | KingstonHull | 1:10.24 |
| 5 | 17 | James Edwards | 17 | S14 | Chippenham | 1:12.68 |
| 6 | 13 | Aaron Gilbert | 18 | S14 | Orion | 1:18.32 |
| 7 | 9 | Connor Lockwood | 13 | S14 | Woking | 1:20.81 |
| 8 | 5 | Finlay Middleton | 14 | S8 | Mt Kelly | 1:31.09 |
| 9 | 1 | Levi Codling | 12 | S7 | Coalville | 1:50.96 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 0 | 4 | James Brown | 14 | S9 | Orion | 1:33.40 |
| 1 | 8 | Oludaisi Adefisan | 16 | S9 | Croydon Amph | 1:23.68 |
| 2 | 12 | J Monaghan-Coombs | 18 | S9 | Saxon Crown | 1:19.14 |
| 3 | 16 | Cameron Vearncombe | 14 | S14 | Caradon | 1:14.36 |
| 4 | 20 | Matthew Redfern | 18 | S13 | Worcester | 1:06.89 |
| 5 | 18 | Craig McNeil | 19 | S10 | SwimTrafford | 1:11.64 |
| 6 | 14 | Louis Hines | 19 | S14 | Watford SC | 1:15.27 |
| 7 | 10 | Matthew Rishworth | 14 | S10 | Staines | 1:20.71 |
| 8 | 6 | Luke Batty | 11 | S9 | Bolton Metro | 1:28.94 |
| 9 | 2 | William Whitehead | 11 | S8 | Rotherham Mo | 1:42.14 |