Boys 10 Yrs/Over 50m Butterfly - Heats
10/11 Yrs Age Group - Full Results
| Place | Name | YoB | Club | | Time | | | FINA Pt | |
| 1. | Hugo Raubitschek-Smith | (08) | Hatfield | | 35.19 | | | 237 | |
| 2. | Nathan Massam | (08) | Co St Albans | | 36.47 | | | 213 | |
| 3. | Tom Dennis | (08) | Harpenden | | 36.69 | | | 209 | |
| 4. | Daniel Belsey | (08) | Hemel Hemp | | 37.61 | | | 194 | |
| 5. | Elliot Gillham | (08) | Hemel Hemp | | 38.34 | | | 183 | |
| 6. | William Lockwood | (09) | Hatfield | | 38.77 | | | 177 | |
| 7. | Daniel Williams | (08) | Cheshunt | | 39.15 | | | 172 | |
| 8. | Rafferty May | (08) | Watford SC | | 39.83 | | | 163 | |
| 9. | Maxwell Hozier | (09) | Hoddesdon | | 40.19 | | | 159 | |
| 10. | Olly Fenwick | (09) | Verulam | | 40.61 | | | 154 | |
| 11. | Sonny Maddison | (09) | Hatfield | | 41.12 | | | 149 | |
| 12. | Finley Miller | (08) | Hitchin | | 41.34 | | | 146 | |
| 13. | Carl Guevan | (08) | Stevenage | | 41.47 | | | 145 | |
| 14. | Oscar Chaplin | (08) | Co St Albans | | 42.45 | | | 135 | |
| 15. | Lawson Gray | (08) | Berkhamsted | | 44.12 | | | 120 | |
12 Yrs Age Group - Full Results
| Place | Name | YoB | Club | | Time | | | FINA Pt | |
| 1. | Ethan Howard | (07) | Potters Bar | | 33.82 | | | 267 | |
| 2. | William Fawcett | (07) | Watford SC | | 34.77 | | | 246 | |
| 3. | Koby Cornwell | (07) | Potters Bar | | 34.81 | | | 245 | |
| 4. | Toby Martin | (07) | Harpenden | | 35.27 | | | 236 | |
| 5. | Ryan Wall | (07) | Royston | | 35.49 | | | 231 | |
| 6. | Archie Rann | (07) | Ware | | 35.69 | | | 227 | |
| 7. | Edward Ormsby | (07) | Royston | | 36.39 | | | 214 | |
| 8. | Lucas Hartley | (07) | Hatfield | | 36.85 | | | 207 | |
| 9. | Daniel Meier | (07) | Potters Bar | | 37.80 | | | 191 | |
| 10. | Danny Foreman | (07) | Potters Bar | | 38.00 | | | 188 | |
| 11. | George Taylor | (07) | Bishop Stort | | 39.04 | | | 174 | |
| 12. | Samuel Barnett | (07) | Potters Bar | | 39.25 | | | 171 | |
| 13. | George Ball | (07) | Hemel Hemp | | 39.69 | | | 165 | |
| 14. | Oscar Hollingsworth | (07) | Co St Albans | | 39.92 | | | 162 | |
| 15. | Alexander Hollis | (07) | Watford SC | | 40.64 | | | 154 | |
13 Yrs Age Group - Full Results
| Place | Name | YoB | Club | | Time | | | FINA Pt | |
| 1. | Callum Cox | (06) | Ware | | 32.32 | | | 306 | |
| 2. | Jake Moore | (06) | Potters Bar | | 33.80 | | | 268 | |
| 3. | Jason Ho | (06) | Hatfield | | 34.12 | | | 260 | |
| 4. | Fergus Reid | (06) | Co St Albans | | 34.32 | | | 256 | |
| 5. | Daniel Holliss | (06) | Co St Albans | | 34.36 | | | 255 | |
| 6. | Kai Adams | (06) | Potters Bar | | 34.37 | | | 255 | |
| 7. | Henry Catterfeld | (06) | Hatfield | | 35.45 | | | 232 | |
| 8. | Alex Twyford | (06) | Bushey | | 35.51 | | | 231 | |
| 9. | Alexander Feeney | (06) | Potters Bar | | 35.72 | | | 227 | |
| 10. | Joshua Ellis | (06) | Hatfield | | 35.81 | | | 225 | |
| 11. | Cub Maddison | (06) | Hatfield | | 35.96 | | | 222 | |
| 12. | Alexander Kalverboer | (06) | Berkhamsted | | 36.11 | | | 220 | |
| 13. | David Badcock | (06) | Bishop Stort | | 36.84 | | | 207 | |
| 14. | Theo Lim | (06) | Watford SC | | 37.83 | | | 191 | |
| | Nathanial Mapley | (06) | Co St Albans | | DQ 8 .3L | | | | |
14 Yrs Age Group - Full Results
| Place | Name | YoB | Club | | Time | | | FINA Pt | |
| 1. | Samuel Pyefinch | (05) | Tring | | 28.92 | | | 428 | |
| 2. | Peter Soczewka | (05) | Hatfield | | 29.43 | | | 406 | |
| 3. | Oliver Carpenter | (05) | Co St Albans | | 30.82 | | | 353 | |
| 4. | Daniel Ord | (05) | Watford SC | | 31.12 | | | 343 | |
| 5. | Enzo Lim | (05) | Watford SC | | 31.65 | | | 326 | |
| 6. | Ethan Baskerville | (05) | Hatfield | | 31.71 | | | 324 | |
| 7. | Joshua Heesom | (05) | Potters Bar | | 31.79 | | | 322 | |
| 8. | James Gisborne | (05) | Bishop Stort | | 31.85 | | | 320 | |
| 9. | Nathan Whiting | (05) | Hemel Hemp | | 32.19 | | | 310 | |
| 10. | James Coleman | (05) | Co St Albans | | 32.38 | | | 305 | |
| 11. | James Atwell | (05) | Harpenden | | 32.54 | | | 300 | |
| 12. | Alexander Olayomi | (05) | Watford SC | | 32.64 | | | 297 | |
| 13. | Jake Gourd | (05) | Watford SC | | 32.77 | | | 294 | |
| 14. | Aidan Ingram | (05) | Co St Albans | | 33.03 | | | 287 | |
| 15. | Jake Evans | (05) | Cheshunt | | 33.36 | | | 279 | |
| 16. | Jack Barnard | (05) | Potters Bar | | 33.57 | | | 273 | |
| 17. | Thomas Holmes-Higgin | (05) | Berkhamsted | | 34.08 | | | 261 | |
| 18. | Charlie Stanbury | (05) | Potters Bar | | 34.23 | | | 258 | |
| 19. | Charles Taverner | (05) | Watford SC | | 34.59 | | | 250 | |
| 20. | Dylan Kennell | (05) | Hemel Hemp | | 35.31 | | | 235 | |
| | Luke Flynn | (05) | Watford SC | | DQ 4 .4L | | | | |
15 Yrs Age Group - Full Results
| Place | Name | YoB | Club | | Time | | | FINA Pt | |
| 1. | Michael Klimaszewski | (04) | Hatfield | | 27.03 | | | 524 | |
| 2. | Benjamin Green | (04) | Watford SC | | 27.86 | | | 479 | |
| 3. | Oscar Brice | (04) | Co St Albans | | 30.56 | | | 363 | |
| 4. | Arvin Rodriguez | (04) | Watford SC | | 30.77 | | | 355 | |
| 5. | Noah Cornwell | (04) | Potters Bar | | 30.89 | | | 351 | |
| 6. | George Williams | (04) | Co St Albans | | 30.99 | | | 348 | |
| 7. | Patrick Kovar | (04) | Watford SC | | 31.28 | | | 338 | |
| 8. | Jamie Brown | (04) | Stevenage | | 31.55 | | | 329 | |
| 9. | Zac Hozier | (04) | Hoddesdon | | 31.60 | | | 328 | |
| 10. | Dylan Cole | (04) | Stevenage | | 31.61 | | | 328 | |
| 11. | Yuto Watanabe | (04) | Hatfield | | 31.75 | | | 323 | |
| 12. | Nathaniel Hopkins | (04) | Verulam | | 32.38 | | | 305 | |
| 13. | Finn Menich | (04) | Hertford | | 34.43 | | | 253 | |
16 Yrs/Over Age Group - Full Results
| Place | Name | YoB | Club | | Time | | | FINA Pt | |
| 1. | Lucas Dyson-Diaz | (00) | Hatfield | | 26.26 | | | 572 | |
| 2. | Callum Davis | (00) | Bishop Stort | | 26.69 | | | 544 | |
| 3. | Joshua Holland | (03) | Hertford | | 27.03 | | | 524 | |
| 4. | Ashley Holness-Wright | (96) | Watford SC | | 27.38 | | | 504 | |
| 4. | Joshua Trapp | (01) | Hertford | | 27.38 | | | 504 | |
| 6. | Jude Liddiard | (01) | Co St Albans | | 27.42 | | | 502 | |
| 7. | Devesh Kapoor | (03) | Watford SC | | 27.53 | | | 496 | |
| 8. | Joshua Bridgeland | (03) | Hatfield | | 27.71 | | | 486 | |
| 9. | Adam Martin | (00) | Potters Bar | | 27.75 | | | 484 | |
| 10. | Harrison Lees | (01) | Watford SC | | 27.84 | | | 480 | |
| 11. | Daniel Murtagh | (03) | Hatfield | | 27.95 | | | 474 | |
| 12. | Reese Housden | (02) | Hatfield | | 28.01 | | | 471 | |
| 13. | Joel Green | (00) | Hemel Hemp | | 28.17 | | | 463 | |
| 14. | Daniel English | (02) | Hitchin | | 28.30 | | | 457 | |
| 15. | Alex Brundle | (01) | Royston | | 28.38 | | | 453 | |
| 16. | Angus Harrow | (02) | Harpenden | | 28.40 | | | 452 | |
| 17. | Mattias Morse | (03) | Hemel Hemp | | 28.48 | | | 448 | |
| 18. | Tolu Elesin | (02) | Potters Bar | | 28.66 | | | 440 | |
| 19. | Thomas Stanbury | (01) | Potters Bar | | 28.75 | | | 435 | |
| 20. | Daniel Martin | (03) | Co St Albans | | 29.13 | | | 419 | |
| 21. | John Telensky | (01) | Harpenden | | 29.14 | | | 418 | |
| 22. | Charlie King | (03) | Co St Albans | | 29.28 | | | 412 | |
| 23. | Matteo Lo Biundo | (03) | Hitchin | | 29.35 | | | 409 | |
| 24. | Luke Pestaille | (03) | Hatfield | | 29.42 | | | 406 | |
| 25. | Dominic McCarthy | (02) | Hoddesdon | | 29.55 | | | 401 | |
| 26. | Edward Loveman | (94) | Co St Albans | | 29.71 | | | 395 | |
| 27. | Rhys Armstrong | (01) | Verulam | | 29.85 | | | 389 | |
| 28. | Jonathan Farrow | (02) | Hemel Hemp | | 30.51 | | | 364 | |
