EVENT 311 Open/Male 16 /Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Dorian Marafko | 16 | Corby | 1:22.90 |
| 3 | 4 | Zak Hesketh | 16 | Rushden | 1:21.54 |
| 4 | 6 | Matthew Kemp | 16 | Wellingboro | 1:14.40 |
| 5 | 5 | Ben Davies | 16 | Corby | 1:15.75 |
| 6 | 3 | Jesunefe Abeke | 16 | Corby | 1:21.58 |
| 7 | 1 | Jamie Mason | 17 | Corby | 1:23.20 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Wojciech Walach | 16 | Corby | 1:09.30 |
| 2 | 16 | Oliver Dovey | 16 | Corby | 1:06.80 |
| 3 | 22 | Aaron Warren | 25 | Northampton | 1:01.20 |
| 4 | 28 | Ryan Coles | 21 | Daventry | 58.80 |
| 5 | 25 | Jack Bignell | 18 | Northampton | 1:00.54 |
| 6 | 19 | Curtis Minney | 21 | Kettering | 1:02.45 |
| 7 | 13 | Finlay Underwood | 17 | Rushden | 1:08.35 |
| 8 | 7 | Ronnie Booker | 17 | Wellingboro | 1:14.10 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Alexandru Ierina | 16 | Corby | 1:08.70 |
| 2 | 17 | Stephen Loc | 24 | Daventry | 1:04.80 |
| 3 | 23 | Jack Hurry | 17 | Northampton | 1:01.03 |
| 4 | 29 | Edun Rowe | 18 | Northampton | 57.70 |
| 5 | 26 | Adam Frazer | 20 | Rushden | 59.33 |
| 6 | 20 | Connor Allen | 19 | Wellingboro | 1:02.20 |
| 7 | 14 | Lewis Reynolds | 19 | Nene Valley | 1:07.97 |
| 8 | 8 | Kristians Kupcovs | 17 | Daventry | 1:09.80 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Edward Oscroft | 17 | Northampton | 1:08.40 |
| 2 | 18 | Mark Khametov | 18 | Rushden | 1:03.20 |
| 3 | 24 | Daniel Doyle | 18 | Kettering | 1:00.95 |
| 4 | 30 | M Vasconcellos-Blanch | 18 | Rushden | 56.81 |
| 5 | 27 | Sam Brylka | 17 | Corby | 59.10 |
| 6 | 21 | Zachary Jones | 17 | Northampton | 1:01.34 |
| 7 | 15 | Riley Woodward | 17 | Northampton | 1:07.20 |
| 8 | 9 | Finley Emery | 17 | Rushden | 1:09.55 |