Open/Male - Long Course - 100m Butterfly - Camden Swiss Cottage SC - 10 Years Age Group - At 31st December 2020
| Rank | Name | Ranked Club | YoB | Meet Name | Venue | Level | Date | Time | FINA |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Martin Vermaat | Camden Swiss | 10 | City of Sheffield SS Premier Open Meet 2024 | Sheffield | 1 | 10/03/24 | 1:03.19 | 479 |
| 2 | Henry Gillam | Camden Swiss | 10 | Newham & UEL SC National Qualifier Open Meet 2024 | Stratford | 1 | 24/03/24 | 1:09.02 | 367 |
| 3 | Philip Borisov | Camden Swiss | 10 | Newham & UEL SC National Qualifier Open Meet 2024 | Stratford | 1 | 24/03/24 | 1:14.89 | 287 |
| 4 | Oliver Finch | Camden Swiss | 10 | SE London Summer Championships 2023 | Stratford | 1 | 01/05/23 | 1:20.21 | 234 |