EVENT 304 Mens MC 100m Backstroke NAT - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 1 | 2 | Connor Stuart | 03 | S6 | Co Cambridge | 1:57.89 |
| 2 | 4 | Alexander Hobbs | 05 | S7 | Mt Kelly | 1:39.03 |
| 3 | 6 | William Whitehead | 05 | S8 | Rotherham Mo | 1:36.98 |
| 4 | 8 | Steven McCormick | 01 | S9 | Fins | 1:34.02 |
| 5 | 7 | Jacob Chambers | 03 | S8 | Co Manch Aq | 1:34.14 |
| 6 | 5 | Leo McCrea | 03 | S6 | Bourmth Coll | 1:38.40 |
| 7 | 3 | Cory Dakin | 02 | S7 | Co Cambridge | 1:50.08 |
| 8 | 1 | Sebastian Williams | 04 | S6 | Barnet Copt | 2:00.78 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 10 | Lachlan Macbeth | 93 | S14 | Inverness | 1:31.14 |
| 1 | 12 | Liam Hardy | 03 | S14 | Co Manch Aq | 1:29.96 |
| 2 | 14 | Leo Johnson | 93 | S8 | Out To Swim | 1:28.55 |
| 3 | 16 | Balthazar Bradshaw | 06 | S10 | Chelsea&West | 1:27.60 |
| 4 | 18 | Maximilian Tulloch | 05 | S9 | Chalfont | 1:26.87 |
| 5 | 17 | Owen Say | 01 | S8 | Bracknell | 1:27.19 |
| 6 | 15 | Owen Woodrow | 01 | S8 | Co Norwich | 1:27.88 |
| 7 | 13 | Kian Saville | 00 | S10 | Daventry | 1:29.38 |
| 8 | 11 | Conor Freeman | 01 | S14 | Leic Peng | 1:30.87 |
| 9 | 9 | Benjamin Pope | 04 | S8 | Havant & Wat | 1:32.76 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 22 | Joseph Greaves | 03 | S14 | Littleh'pton | 1:25.95 |
| 1 | 28 | Luke Batty | 05 | S9 | Bolton Metro | 1:20.40 |
| 2 | 34 | Owen Garsides | 01 | S14 | KingstonHull | 1:17.93 |
| 3 | 40 | Kieran Williams | 04 | S10 | Newquay | 1:12.24 |
| 4 | 46 | Matthew Redfern | 98 | S13 | Worcester | 1:04.42 |
| 5 | 43 | Callum Pearson | 96 | S10 | Hastings | 1:06.56 |
| 6 | 37 | Christopher Currie | 94 | S14 | Co Oxford | 1:17.45 |
| 7 | 31 | Connor Boyfield | 98 | S9 | Boston | 1:19.71 |
| 8 | 25 | Matthew Clowes | 99 | S8 | Caradon | 1:23.45 |
| 9 | 19 | Reilly Shanahan | 00 | S9 | Shrewsbury | 1:26.43 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 23 | Rhys Gill | 02 | S9 | Ythan | 1:25.57 |
| 1 | 29 | Angus Leckonby | 02 | S14 | Scarborough | 1:20.34 |
| 2 | 35 | Evan Holt | 03 | S14 | Cockermouth | 1:17.75 |
| 3 | 41 | Tom Piggott | 00 | S10 | Oswestry Ott | 1:11.63 |
| 4 | 47 | George Kelman-Johns | 01 | S14 | Clayesmore | 1:03.98 |
| 5 | 44 | James Edwards | 99 | S14 | Calne Alpha | 1:05.87 |
| 6 | 38 | Conor Ballard | 02 | S10 | Leatherhead | 1:16.43 |
| 7 | 32 | Ryan Potter | 03 | S14 | Blackpool Aq | 1:19.25 |
| 8 | 26 | Peter Harper | 98 | S14 | Marlborough | 1:23.25 |
| 9 | 20 | Adam Donnachie | 00 | S8 | Eastkilbride | 1:26.38 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 24 | Ethan Naisbitt | 03 | S9 | Pioneer 79 | 1:24.95 |
| 1 | 30 | George Eldredge | 01 | S14 | Brompton | 1:19.77 |
| 2 | 36 | Joshua Fairchild | 98 | S14 | Co Coventry | 1:17.52 |
| 3 | 42 | Cameron Vearncombe | 02 | S14 | Newquay | 1:10.10 |
| 4 | 48 | Rhys Davies | 01 | S14 | Pembs Cty | 1:03.21 |
| 5 | 45 | Dylan Broom | 02 | S14 | Torfaen D | 1:05.24 |
| 6 | 39 | Caleb Grace | 98 | S14 | Littleh'pton | 1:15.72 |
| 7 | 33 | Dominic Redpath | 02 | S9 | Portsmouth N | 1:18.73 |
| 8 | 27 | Scott Hadley | 98 | S8 | Orion | 1:20.73 |
| 9 | 21 | Levi Codling | 04 | S7 | Coalville | 1:25.96 |