EVENT 506 Men 17 Yrs/Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 3 | 1 | Maxwell Adams | 05 | Team Bath AS | 58.84 |
| 4 | 3 | Oliver Shead | 05 | Plymouth Lea | 58.59 |
| 5 | 2 | Max Geysen-Holley | 05 | Co Cardiff | 58.77 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 4 | George Whiteman | 04 | Co Peterboro | 58.57 |
| 1 | 6 | Elijah Kendrick | 04 | Plymouth Lea | 58.36 |
| 2 | 8 | Patrick Braddock | 04 | Oldham Aqua | 58.26 |
| 3 | 10 | Sebastian Rawes | 04 | AbingdonVale | 58.16 |
| 4 | 12 | Joseph Stout | 05 | Co Salford | 58.06 |
| 5 | 11 | Jack Ashurst | 04 | N & D PP SC | 58.13 |
| 6 | 9 | Dylan Reeve | 05 | Mt Kelly | 58.17 |
| 7 | 7 | Jason Herbert | 05 | Leamington | 58.32 |
| 8 | 5 | Brodie Gordon-Gibson | 05 | Warrender Ba | 58.49 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 14 | Thomas English | 04 | Chester Le S | 58.04 |
| 1 | 16 | Sean Simmons | 05 | Bristol Hen | 57.93 |
| 2 | 18 | Adam Strickland | 04 | N & D PP SC | 57.84 |
| 3 | 20 | Ellis Cleworth | 04 | Co Liverpool | 57.65 |
| 4 | 22 | Thomas Dickson | 04 | Portsmouth N | 57.59 |
| 5 | 21 | Toby Hill | 04 | Co Manch Aq | 57.60 |
| 6 | 19 | David Sanchez | 05 | Tilehurst | 57.76 |
| 7 | 17 | Joshua Solly | 04 | Bromley | 57.90 |
| 8 | 15 | Rico Bringeman | 05 | South Lincs | 58.03 |
| 9 | 13 | Arun Oelkers | 05 | Mt Kelly | 58.06 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 24 | Henry Maw | 04 | Southport | 57.22 |
| 1 | 26 | James Hart | 04 | Plymouth Lea | 57.18 |
| 2 | 28 | Dominic Morgan | 05 | Leatherhead | 56.96 |
| 3 | 30 | Robbie Hemmings | 04 | Poole | 56.87 |
| 4 | 32 | Ruairi McKinnon | 04 | Co Glasgow | 56.78 |
| 5 | 31 | Liam Dawson | 05 | BelperMarlin | 56.87 |
| 6 | 29 | Harley James | 05 | Co Cardiff | 56.92 |
| 7 | 27 | Finley Allman | 05 | Co Sheffield | 57.17 |
| 8 | 25 | Albert Branch | 05 | Sevenoaks | 57.21 |
| 9 | 23 | Charlie Broome | 04 | Co Leeds | 57.36 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 36 | Thomas Currie | 04 | Northampton | 56.45 |
| 1 | 42 | Luke Ibbeson | 03 | Loughboro Un | 56.08 |
| 2 | 48 | James Cleaver | 05 | Beckenham | 55.53 |
| 3 | 54 | Dylan Gallagher | 03 | Swansea Uni | 55.18 |
| 4 | 60 | Cole Hewitt | 02 | Swansea Uni | 54.93 |
| 5 | 57 | Jamie Robertson | 00 | UniOfStirl | 55.05 |
| 6 | 51 | Jake Fabi | 99 | Co Cardiff | 55.24 |
| 7 | 45 | Josh Kirlew | 99 | Enfield Sq | 55.87 |
| 8 | 39 | Christopher Muir | 98 | UniOfStirl | 56.23 |
| 9 | 33 | Joshua Gough | 04 | Co Hereford | 56.71 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 37 | Calum Rose | 04 | Warrender Ba | 56.41 |
| 1 | 43 | Matin Balsini | 01 | Guildford Ct | 55.99 |
| 2 | 49 | Freddy Clampett | 98 | Swansea Uni | 55.42 |
| 3 | 55 | R Rowbotham-Keating | 05 | Co Manch Aq | 55.15 |
| 4 | 61 | Rhys Edwards | 02 | Swansea Uni | 54.70 |
| 5 | 58 | Ned Sharp | 03 | Skipton | 54.97 |
| 6 | 52 | Lewis Maxwell | 03 | N & D PP SC | 55.23 |
| 7 | 46 | Archie Minto | 03 | Skipton | 55.81 |
| 8 | 40 | Tom Robertson | 05 | Aberdeen Dol | 56.10 |
| 9 | 34 | Kieran Grant | 05 | Bev Barracud | 56.69 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 38 | Samuel Tucker | 04 | Wycombe Dist | 56.29 |
| 1 | 44 | Samuel Greenbank | 03 | Co Sheffield | 55.95 |
| 2 | 50 | Riccardo Lucarelli | 05 | Mt Kelly | 55.35 |
| 3 | 56 | Michael Klimaszewski | 04 | Camden Swiss | 55.13 |
| 4 | 62 | Thomas Beeley | 99 | Plymouth Lea | 54.48 |
| 5 | 59 | Aaron Fox | 01 | Co Sheffield | 54.94 |
| 6 | 53 | Antonio Rodriguez | 04 | Swansea Uni | 55.21 |
| 7 | 47 | George Barber | 01 | Co Sheffield | 55.73 |
| 8 | 41 | Solomon Williams | 05 | Millfield | 56.10 |
| 9 | 35 | Calvin Fry | 04 | Mt Kelly | 56.50 |