EVENT 503 Mens Open 50m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Brinley Dorrell | 14 | Woking | 25.51 |
| 1 | 3 | Samuel Crew | 15 | Haslemere | 25.28 |
| 2 | 5 | Alex Thompson | 15 | Co Liverpool | 25.27 |
| 3 | 7 | William Halliwell | 15 | Utd Bristol | 25.19 |
| 4 | 9 | Myles Robinson-Young | 15 | Co Peterboro | 25.52 |
| 5 | 8 | Benjamin Fannon | 15 | Plymouth Lea | 25.25 |
| 6 | 6 | Shakil Giordani | 15 | Haringey | 25.06 |
| 7 | 4 | Archie Dunne | 14 | Co Bradford | 24.91 |
| 8 | 2 | Benji Gillingham | 15 | Mt Kelly | 25.14 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 11 | William Gearey | 14 | Worcester | 25.77 |
| 1 | 13 | Matthew Plumb | 15 | Dartmoor DA | 25.50 |
| 2 | 15 | Joseph Thompson | 15 | Plymouth Lea | 25.76 |
| 3 | 17 | James Cooper | 15 | Basildon Ph | 25.78 |
| 4 | 19 | Matthew Richards | 15 | Royal Wolv | 24.51 |
| 5 | 18 | George Robert-Shaw | 15 | Dorking | 25.20 |
| 6 | 16 | Matthew Broughton | 14 | Co Lincoln P | 25.75 |
| 7 | 14 | Jonathon Adam | 15 | Co Cambridge | 25.18 |
| 8 | 12 | Eugene Brooks-Clarke | 15 | Co Sheffield | 25.56 |
| 9 | 10 | Louis Choron | 15 | Hastings | 24.78 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 21 | Ayotobi Laguda | 15 | Hatfield | 25.29 |
| 1 | 23 | Nathaniel Rodrigues | 15 | Sevenoaks | 25.10 |
| 2 | 25 | Edward Mildred | 14 | Northampton | 25.55 |
| 3 | 27 | Will Morris | 15 | Tynemouth | 24.81 |
| 4 | 29 | Jordan Cooley | 18 | Stockport Mo | 24.39 |
| 5 | 28 | Kyo Tanner | 15 | Ellesmere Co | 24.79 |
| 6 | 26 | Reid Jones | 15 | Plymouth Lea | 24.59 |
| 7 | 24 | Jake Moxham | 15 | Co Cambridge | 24.63 |
| 8 | 22 | Douglas Kelly | 14 | Milngavie &B | 25.56 |
| 9 | 20 | Ewan Taylor | 15 | Staines | 25.60 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 33 | Julian Chan Quee Lin | 20 | Bath NC | DN:C . |
| 1 | 39 | Cameron Brooks-Clarke | 18 | Co Sheffield | 24.08 |
| 2 | 45 | Robert Fannon | 22 | Plymouth Lea | 23.39 |
| 3 | 51 | James Oxborrow | 19 | Loughboro Un | 23.33 |
| 4 | 57 | Alexander Bowen | 22 | Loughboro Un | 23.02 |
| 5 | 54 | Lewis Burras | 17 | Southport | 23.03 |
| 6 | 48 | L Clifford-Stephenson | 24 | Bark & Dagen | 23.29 |
| 7 | 42 | Daniel Savage | 17 | Northampton | 23.67 |
| 8 | 36 | Robert Cowley | 20 | Co Manch Aq | 23.77 |
| 9 | 30 | Max McCusker | 18 | Millfield | 24.24 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 34 | Lewis Clough | 19 | Co Salford | DN:C . |
| 1 | 40 | Karl Morgan | 22 | Derventio | 24.12 |
| 2 | 46 | Alexander Smith | 27 | Woking | 23.30 |
| 3 | 52 | Samuel Irvine | 20 | Loughboro Un | 22.95 |
| 4 | 58 | Thomas Fannon | 19 | Plymouth Lea | 22.41 |
| 5 | 55 | Miles Munro | 21 | Bath Univ | 23.04 |
| 6 | 49 | Alexis Borisavljevic | 20 | Laqua BEL | 23.45 |
| 7 | 43 | Louis Barker | 18 | Millfield | 23.86 |
| 8 | 37 | Alasdair Wright | 20 | Newcastle | 24.38 |
| 9 | 31 | Jean-Jaques Choron | 20 | Hastings | 24.01 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 35 | Stefano Mitchell | 18 | Plymouth Lea | 24.03 |
| 1 | 41 | Andrew Roy | 19 | Bath Univ | 23.29 |
| 2 | 47 | Valentin Borisavljevic | 20 | Laqua BEL | 23.73 |
| 3 | 53 | Federico Burdisso | 16 | Mt Kelly | 23.26 |
| 4 | 59 | David Cumberlidge | 21 | Edinburgh Un | 22.44 |
| 5 | 56 | Alex Wray | 19 | Loughboro Un | 23.01 |
| 6 | 50 | Luke Pechmann | 27 | Golden Rebel | 23.19 |
| 7 | 44 | Martyn Walton | 20 | UniOfStirl | 23.26 |
| 8 | 38 | Harry Constantine | 17 | Hatfield | 24.14 |
| 9 | 32 | Max Tambling | 18 | Hackney | 24.54 |