Mixed 15/18 Yrs 400m Freestyle Team - Heats (Declared Winners)
Full Results
| Place | Name | A.G | Club | | Time | | R.T. | GB Pts | |
| 1. | Chelmsford SC | | Chelmsford | | 3:53.22 | | | 606 | |
| Ethan HARRINGTON | | | 56.49 | |
| Courtney SANDERS | | | 1.01.91 | |
| HAnnah TRAVELL | | | 1.00.29 | |
| Augustus VEASEY | | | 54.53 | |
| 2. | Colchester SC | | Colchester | | 3:54.69 | | | 595 | |
| Martha DULEY | | | 1.00.20 | |
| Alexander COLE | | | 58.85 | |
| Kahti AUENG | | | 1.01.53 | |
| Jarrod BRADFIELD | | | 54.11 | |
| 3. | West Norfolk Swimming | | West Norfolk | | 3:57.39 | | | 576 | |
| Abigail WHITING | | | 1.00.62 | |
| Elise SORRELL | | | 1.03.52 | |
| Ryan SYKES | | | | |
| Nathan WELLS | | | 1.53.25 | |
| 4. | City of Cambridge SC | | Co Cambridge | | 3:57.52 | | | 575 | |
| Daniel MILLS | | | 57.05 | |
| Harry ROBINSON | | | 54.92 | |
| Sam AUKER | | | 1.02.89 | |
| Lauren HALL | | | 1.02.66 | |
| 5. | Hemel Hempstead SC | | Hemel Hemp | | 3:57.89 | | | 573 | |
| Frederick WOODCOCK | | | 57.00 | |
| Lois MOORE | | | 1.02.80 | |
| Aimee ABREY | | | 1.03.01 | |
| Thomas SHERRIFF | | | 55.08 | |
| 6. | St Felix School SC (So | | St Felix Sch | | 3:59.19 | | | 564 | |
| Nicholas LAMBARTH | | | 58.70 | |
| Josephine BLADES | | | 1.00.16 | |
| Logan MOORE | | | 58.04 | |
| Jessica WESTLAKE | | | 1.02.29 | |
| 7. | Leighton Buzzard SC | | Leighton Buz | | 4:06.57 | | | 516 | |
| Michael JUDD | | | 58.66 | |
| Lauren GRICE | | | 1.04.75 | |
| Jess PAYNE | | | 1.04.69 | |
| Harry WEARS | | | 58.47 | |
