Open/Male - Long Course - 50m Butterfly - Camden Swiss Cottage SC - 13 Years Age Group - At 31st December 2020
| Rank | Name | Ranked Club | YoB | Meet Name | Venue | Level | Date | Time | FINA |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Lucas Bohm | Camden Swiss | 07 | SE London Summer Championships 2023 | Stratford | 1 | 29/04/23 | 28.53 | 475 |
| 2 | Arthur Cory-Wright | Camden Swiss | 07 | Newham & UEL SC National Qualifier Open Meet 2024 | Stratford | 1 | 23/03/24 | 29.34 | 437 |
| 3 | Lev Gorelik | Camden Swiss | 07 | Cardiff International Open Meet 2023 | Cardiff | 1 | 20/05/23 | 30.00 | 409 |