EVENT 209 Men 17 Yrs/Over 50m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 2 | 2 | Andrew Jones | 04 | Royal Wolv | 27.31 |
| 3 | 4 | Jack Hill | 05 | Linslade | 27.62 |
| 4 | 6 | William Storer | 05 | Banchory | 28.31 |
| 5 | 5 | Logan Winter | 05 | Portsmouth N | 28.57 |
| 6 | 3 | Jake Acton | 05 | Brighton | 27.62 |
| 7 | 1 | Grier Vandermeulen | 05 | StirlingSwim | 28.68 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 8 | Max Stockdale | 05 | Repton | DN:C . |
| 1 | 10 | Oliver Burns | 05 | Royal Wolv | 27.49 |
| 2 | 12 | Matthew Hind | 04 | Brighton | 27.99 |
| 3 | 14 | Jan Poulton | 04 | Wycombe Dist | 28.19 |
| 4 | 16 | Kieran Brechenser | 04 | Aberdeen Dol | 28.03 |
| 5 | 15 | Tobias Oglesby | 04 | West Norfolk | 27.57 |
| 6 | 13 | Matthew Aldred | 05 | Watford SC | 28.30 |
| 7 | 11 | Ashley Donaldson | 04 | Altrincham | 27.77 |
| 8 | 9 | Jason Mahmutoglu | 04 | Chelsea&West | 27.24 |
| 9 | 7 | Benjamin Fox-Wiltshire | 05 | Co Cardiff | 28.30 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 18 | Calum Rose | 04 | Warrender Ba | 28.08 |
| 1 | 20 | Solomon Williams | 05 | Millfield | 27.70 |
| 2 | 22 | Joshua Golsby-Taylor | 04 | Leamington | 28.11 |
| 3 | 24 | Elliot Woodburn | 05 | Millfield | 27.06 |
| 4 | 26 | Adam Graham | 05 | Millfield | 27.50 |
| 5 | 25 | James Pennington | 04 | Altrincham | 27.39 |
| 6 | 23 | Thomas Spencer | 05 | Portsmouth N | 28.03 |
| 7 | 21 | Jude Hills | 05 | Thurrock | 27.24 |
| 8 | 19 | Fabian Brudnicki | 04 | Co Peterboro | 27.89 |
| 9 | 17 | Simon Robson | 04 | York City | 30.17 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 28 | Robert Burgess | 05 | Co Glasgow | 27.17 |
| 1 | 30 | Christian Duetoft | 05 | Guildford Ct | 27.50 |
| 2 | 32 | Conor Massey | 02 | Aberdeen Per | 28.17 |
| 3 | 34 | Kaleb Fox-Jones | 04 | Newbury | 27.21 |
| 4 | 36 | Tom Barden | 03 | Loughboro Un | 26.82 |
| 5 | 35 | Oscar Barlow | 05 | Bath Univ | 27.25 |
| 6 | 33 | Jamie Ferguson | 03 | Aberdeen Per | 26.95 |
| 7 | 31 | Aiden Symons-Brown | 04 | Plymouth Lea | DN:C . |
| 8 | 29 | Callum Greenwood | 97 | Co Bristol | 27.44 |
| 9 | 27 | James Cleaver | 05 | Beckenham | 27.61 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 40 | Nathan Wells | 98 | West Norfolk | 26.88 |
| 1 | 46 | Simon Kliment | 01 | Co Sheffield | 27.02 |
| 2 | 52 | Filip Fraczek-Krygier | 02 | Poole | 26.48 |
| 3 | 58 | Jamie Robertson | 00 | UniOfStirl | 25.57 |
| 4 | 64 | Zach Speakman | 02 | UniOfStirl | 25.67 |
| 5 | 61 | Robbie Hemmings | 04 | Poole | 25.64 |
| 6 | 55 | Alexander Painter | 04 | Millfield | 27.06 |
| 7 | 49 | Sean Simmons | 05 | Bristol Hen | 26.86 |
| 8 | 43 | Shakil Giordani | 02 | Co Manch Aq | 27.15 |
| 9 | 37 | Brogan Hyde | 03 | UniOfStirl | 27.30 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 41 | Lewis Warner | 05 | Bassetlaw SS | 26.73 |
| 1 | 47 | Lewis Maxwell | 03 | N & D PP SC | 26.74 |
| 2 | 53 | Samuel Greenbank | 03 | Co Sheffield | 26.15 |
| 3 | 59 | Fritz Dietz | 04 | Dartmoor DA | 26.18 |
| 4 | 65 | Cameron Brooker | 02 | Wycombe Dist | 25.81 |
| 5 | 62 | Harry Turner | 99 | Swansea Uni | 26.24 |
| 6 | 56 | Harry Nicholson | 04 | Newcastle | 26.34 |
| 7 | 50 | Jack Knight | 03 | Co Cardiff | 26.97 |
| 8 | 44 | Cameron Travis | 04 | Aberdeen Per | 26.77 |
| 9 | 38 | James Le Grice | 03 | Hinckley | 26.87 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 42 | Gabriel Knight | 05 | S Bournem'th | 27.31 |
| 1 | 48 | Archie Evans | 04 | Corby | 26.57 |
| 2 | 54 | Luca De Zilva | 03 | Leic Sharks | 26.35 |
| 3 | 60 | Matthew Ward | 05 | Mt Kelly | 25.96 |
| 4 | 66 | Oliver Morgan | 03 | Birm'ham Uni | 25.59 |
| 5 | 63 | Toby Hill | 04 | Co Manch Aq | 25.95 |
| 6 | 57 | Jack Skerry | 04 | New Hall | 26.52 |
| 7 | 51 | Samuel Pease | 99 | UniOfStirl | 26.45 |
| 8 | 45 | Calvin Fry | 04 | Mt Kelly | 27.83 |
| 9 | 39 | Benjamin Prosser | 00 | Loughboro Un | 27.09 |