EVENT 409 Mens Open 100m Backstroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 3 | 2 | Mitchell Cartlidge | 03 | Cosacss | 1:06.15 |
| 4 | 4 | Joseph Giles | 03 | Cirencester | 1:06.05 |
| 5 | 3 | Sam Adams | 03 | Calne Alpha | 1:06.08 |
| 6 | 1 | Chester Leeming | 04 | St Felix Sch | 1:06.19 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 6 | Pierce Greening | 03 | Cockermouth | 1:05.86 |
| 1 | 8 | Louis Hayes | 04 | Sevenoaks | 1:05.78 |
| 2 | 10 | Matthew Broughton | 03 | Co Lincoln P | 1:05.64 |
| 3 | 12 | Christopher Sims | 03 | Wycombe Dist | 1:05.45 |
| 4 | 14 | Joe Overton | 04 | Enfield Sq | 1:05.38 |
| 5 | 13 | Archie Bell | 03 | Cheadle | 1:05.38 |
| 6 | 11 | Calvin Fry | 04 | Millfield | 1:05.63 |
| 7 | 9 | Joseph Davies | 03 | Fareham N'ds | 1:05.64 |
| 8 | 7 | William Gearey | 03 | Worcester | 1:05.85 |
| 9 | 5 | Joshua Skinner | 03 | Nova Cent'n | 1:05.88 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 16 | Daniel Day | 04 | Worcester | 1:05.35 |
| 1 | 18 | Ellis Cleworth | 04 | Co Liverpool | 1:05.30 |
| 2 | 20 | Alexander Morley | 02 | Co Salford | 1:04.88 |
| 3 | 22 | Giovanni Bordone | 02 | Northampton | 1:04.75 |
| 4 | 24 | Kyo Tanner | 02 | Ellesmere Co | 1:04.50 |
| 5 | 23 | Jack Bowyer | 02 | West Suffolk | 1:04.67 |
| 6 | 21 | Alex Vonckx | 02 | Haringey | 1:04.78 |
| 7 | 19 | Antonio Nikolaou | 03 | Hillingdon | 1:05.25 |
| 8 | 17 | Ryan Zhao | 04 | Gates &Whick | 1:05.31 |
| 9 | 15 | William Ellis | 03 | Bo Stockton | 1:05.36 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 26 | William Halliwell | 02 | Utd Bristol | 1:04.31 |
| 1 | 28 | Joshua Williams | 02 | Wycombe Dist | 1:04.26 |
| 2 | 30 | Dara Clarke | 02 | Co Lincoln P | 1:03.94 |
| 3 | 32 | Willem Koster | 02 | Dulwich Dolp | 1:03.64 |
| 4 | 34 | Tom Mitchell | 02 | Co Coventry | 1:03.32 |
| 5 | 33 | Henry Wyrill | 02 | West Dorset | 1:03.62 |
| 6 | 31 | Shakil Giordani | 02 | Haringey | 1:03.71 |
| 7 | 29 | Joseph Lenihan | 02 | Sutton Cheam | 1:04.08 |
| 8 | 27 | Tom Ward | 02 | Bo Stockton | 1:04.29 |
| 9 | 25 | Jack Plummer | 02 | Plymouth Lea | 1:04.32 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 36 | Oskar Soulas | 01 | Enfield Sq | 1:03.19 |
| 1 | 38 | Billy Pettit | 01 | Northampton | 1:03.10 |
| 2 | 40 | Mark Edmundson | 01 | Team Bath AS | 1:03.03 |
| 3 | 42 | Matthew Ferguson | 01 | Woking | 1:03.01 |
| 4 | 44 | Charles Hodges | 01 | Mt Kelly | 1:02.88 |
| 5 | 43 | Zachary Derrick | 01 | Co Bristol | 1:02.88 |
| 6 | 41 | Moritz Hoogers | 01 | Windsor | 1:03.01 |
| 7 | 39 | Harry Andrew | 02 | Wellingboro | 1:03.07 |
| 8 | 37 | Jack Tremain | 02 | Modernian | 1:03.13 |
| 9 | 35 | Samuel Loizou | 01 | Bo Kirklees | 1:03.24 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 48 | Owen Minnican | 01 | Co Liverpool | 1:02.31 |
| 1 | 54 | Matthew Pomford | 00 | Co Liverpool | 1:00.86 |
| 2 | 60 | Henry Hickson | 00 | Loftus Dol | 1:00.35 |
| 3 | 66 | Callum Greenwood | 97 | Utd Bristol | 1:00.05 |
| 4 | 72 | Ciaran Beard-Jones | 95 | Stockport Mo | 58.68 |
| 5 | 69 | Jacob Wass | 98 | Warrington W | 59.97 |
| 6 | 63 | James Woodward | 00 | Hatfield | 1:00.22 |
| 7 | 57 | Adam Wilkes | 00 | Co Leicester | 1:00.46 |
| 8 | 51 | Leonids Sarigins | 01 | Blythe Barra | 1:02.17 |
| 9 | 45 | Miles Drabwell | 01 | Co Milton K | 1:02.83 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 49 | Jacob Carrington | 01 | Calv Bing | 1:02.20 |
| 1 | 55 | Lewis Gilchrist | 00 | Co Oxford | 1:00.58 |
| 2 | 61 | Nathan Lowe | 00 | Co Salford | 1:00.34 |
| 3 | 67 | Sam Phippen | 00 | Wycombe Dist | 1:00.01 |
| 4 | 73 | Nathan Wells | 98 | Loughboro Un | 58.63 |
| 5 | 70 | James Oxborrow | 98 | Loughboro Un | 59.23 |
| 6 | 64 | Tom Gambold | 00 | Millfield | 1:00.21 |
| 7 | 58 | Ben Hooper | 00 | Bo Of Harrow | 1:00.44 |
| 8 | 52 | Kieran Rutter | 01 | Sutton Cheam | 1:02.08 |
| 9 | 46 | Joshua Smith | 01 | DunmowAtlant | 1:02.65 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 50 | Christopher Hooper | 01 | Ellesmere Co | 1:02.18 |
| 1 | 56 | Harry Middleton | 00 | Plymouth Lea | 1:00.54 |
| 2 | 62 | Matthew Gray | 00 | Co Peterboro | 1:00.30 |
| 3 | 68 | Thomas Garden | 99 | Bracknell | 59.99 |
| 4 | 74 | Ruben Dekker | 93 | Co Cambridge | 58.58 |
| 5 | 71 | James Edmonds | 86 | Utd Bristol | 58.95 |
| 6 | 65 | Daniel Savage | 00 | Northampton | 1:00.19 |
| 7 | 59 | Ben Harrison | 00 | Mt Kelly | 1:00.42 |
| 8 | 53 | Daniel Chada | 01 | Bishop Stort | 1:01.93 |
| 9 | 47 | Jacob Newcombe | 01 | Mt Kelly | 1:02.42 |