Open/Male - Long Course - 50m Butterfly - Camden Swiss Cottage SC - 09 Years Age Group - At 31st December 2019
| Rank | Name | Ranked Club | YoB | Meet Name | Venue | Level | Date | Time | FINA |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Martin Vermaat | Camden Swiss | 10 | Derby Excel New Year Meet 2024 | Sheffield | 1 | 21/01/24 | 28.79 | 462 |
| 2 | Jack Redford | Camden Swiss | 10 | Newham & UEL SC National Qualifier Open Meet 2024 | Stratford | 1 | 23/03/24 | 30.81 | 377 |
| 3 | Philip Borisov | Camden Swiss | 10 | Newham & UEL SC National Qualifier Open Meet 2024 | Stratford | 1 | 23/03/24 | 32.20 | 330 |
| 4 | Henry Gillam | Camden Swiss | 10 | Portsmouth Northsea End of Season 2023 LC L3 Meet | Mountbatten Centre | 3 | 15/07/23 | 32.35 | 326 |
| 5 | Oliver Finch | Camden Swiss | 10 | SE London Summer Championships 2023 | Stratford | 1 | 29/04/23 | 32.66 | 317 |
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