Open/Male - Short Course - 400m Freestyle - Camden Swiss Cottage SC - Open Age Group
| Rank | Name | Ranked Club | YoB | Meet Name | Venue | Level | Date | Time | FINA |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Llewellyn Porter | Camden Swiss | 08 | Swim England Winter Championships 2023 | Sheffield | 2 | 17/12/23 | 3:54.04 | 745 |
| 2 | Cillian Bramham | Camden Swiss | 08 | Camden Swiss Cottage SC Club Championships 2023 | Swiss Cottage LC | 4 | 09/06/23 | 4:16.31 | 567 |
| 3 | Ritchie Grant | Camden Swiss | 07 | Camden Swiss Cottage SC Club Championships 2023 | Swiss Cottage LC | 4 | 09/06/23 | 4:16.90 | 563 |
| 4 | Sauren Singh | Camden Swiss | 08 | SE London Winter Championships 2023 | Stratford | 2 | 04/11/23 | 4:22.05 | 531 |
| 5 | Martin Vermaat | Camden Swiss | 10 | 2023 Wycombe SC L3 County & Regional Qualifier | High Wycombe | 3 | 26/11/23 | 4:25.84 | 508 |
| 6 | Leonardo Diallo | Camden Swiss | 09 | Leinster Senior School Championships 2024 | Dublin | 3 | 04/02/24 | 4:26.29 | 506 |
| 7 | Henry Gillam | Camden Swiss | 10 | Hillingdon Swimming Club Winter Open Meet 2023 | Hillingdon | 3 | 16/12/23 | 4:28.29 | 495 |
| 8 | Hubert Pytlowany | Ealing | 08 | Ealing Autumn 2023 Lv4 Invite 2023 | Ealing | 4 | 28/10/23 | 4:31.02 | 480 |
| 9 | Atai Parnes Molcho | Camden Swiss | 10 | Ealing SC 2024 Regional Qualifier Open Meet | Northolt | 3 | 03/03/24 | 4:31.22 | 479 |
| 10 | Victor Gould | Camden Swiss | 09 | 2023 Wycombe SC L3 County & Regional Qualifier | High Wycombe | 3 | 26/11/23 | 4:37.83 | 445 |
| 11 | Arthur Cory-Wright | Camden Swiss | 07 | Basildon & Phoenix Autumn County Qualifier 2023 | Basildon | 3 | 22/10/23 | 4:38.93 | 440 |
| 12 | Vincent Wun | Camden Swiss | 10 | Winchester City Penguins Winter Autumn Qualifier | Winchester | 2 | 07/10/23 | 4:44.52 | 415 |
| 13 | Malachy Hitchcock | Camden Swiss | 08 | Winchester City Penguins Winter Autumn Qualifier | Winchester | 2 | 07/10/23 | 4:48.70 | 397 |
| 14 | Jason Gholami | Camden Swiss | 09 | 2023 Wycombe SC L3 County & Regional Qualifier | High Wycombe | 3 | 26/11/23 | 4:49.37 | 394 |
| 15 | Jack Redford | Camden Swiss | 10 | 2023 Wycombe SC L3 County & Regional Qualifier | High Wycombe | 3 | 26/11/23 | 4:57.91 | 361 |
| 16 | Finn Mathers | Camden Swiss | 11 | Hillingdon Swimming Club Winter Open Meet 2023 | Hillingdon | 3 | 16/12/23 | 5:01.05 | 350 |
| 17 | Murray Sugasa | Camden Swiss | 11 | Romford Town Last Chance Regional Qualifier 2024 | Romford | 3 | 14/04/24 | 5:01.65 | 348 |
| 18 | Philip Borisov | Camden Swiss | 10 | Ealing SC 2024 Regional Qualifier Open Meet | Northolt | 3 | 03/03/24 | 5:06.44 | 332 |
| 19 | Alexander Thanassoulas | Camden Swiss | 11 | Ealing SC 2024 Regional Qualifier Open Meet | Northolt | 3 | 03/03/24 | 5:07.20 | 329 |
| 20 | Nikita Markov | Camden Swiss | 06 | Ealing SC 2023 XMAS County Qualifier | Northolt | 3 | 03/12/23 | 5:07.69 | 328 |
| 21 | Daniel Daly | Camden Swiss | 11 | Barnet Copthall County Qualifier & Dev Meet 1 2023 | Copthall Pools | 3 | 12/11/23 | 5:09.05 | 323 |
| 22 | Leonard Stocker | Camden Swiss | 08 | Camden Swiss Cottage SC Club Championships 2023 | Swiss Cottage LC | 4 | 09/06/23 | 5:11.92 | 315 |
| 23 | Luc Bonfiglio | Camden Swiss | 11 | 2023 Wycombe SC L3 County & Regional Qualifier | High Wycombe | 3 | 26/11/23 | 5:12.18 | 314 |
| 24 | Zoran Butorac | Camden Swiss | 11 | Barnet Copthall County Qualifier & Dev Meet 1 2023 | Copthall Pools | 3 | 12/11/23 | 5:18.84 | 295 |
| 25 | Lucas Vermaat | Camden Swiss | 12 | Romford Town Last Chance Regional Qualifier 2024 | Romford | 3 | 14/04/24 | 5:29.46 | 267 |
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