| Competition Best Times – Relays | |||||
| EVENT | Club | Time | Location | Year | |
| MALE | |||||
| Open Freestyle 4 x 100m | Poole | 3:32.66 | Littledown | 2012 | |
| Open Freestyle 4 x 50m | Poole | 1:43.70 | Weymouth | 1983 | |
| 14/u Freestyle 4 x 100m | Bournemouth Collegiate | 3:55.13 | Littledown | 2015 | |
| 13/u Freestyle 4 x 50m | Poole | 1:57.89 | Littledown | 2017 | |
| 12/u Freestyle 4 x 50m | Poole | 2:00.47 | Littledown | 2011 | |
| Open Medley 4 x 100m | Swim Bournemouth | 3:53.65 | Littledown | 2015 | |
| 14/u Medley 4 x 100m | Bournemouth Collegiate | 4:15.80 | Littledown | 2015 | |
| 13/u Medley 4 x 50m | Swim Bournemouth | 2:12.40 | Littledown | 2017 | |
| 12/u Medley 4 x 50m | Poole | 2:13.55 | Dorchester | 2019 | |
| FEMALE | |||||
| Open Freestyle 4 x 100m | Poole | 3:53.84 | Littledown | 2017 | |
| Open Freestyle 4 x 50m | Ferndown | 1:56.50 | Weymouth | 1988 | |
| 14/u Freestyle 4 x 100m | Seagulls | 4:08.01 | Littledown | 2014 | |
| 13/u Freestyle 4 x 50m | Poole | 2:00.18 | Dorchester | 2025 | |
| 12/u Freestyle 4 x 50m | Poole | 2:00.39 | Littledown | 2011 | |
| Open Medley 4 x 100m | Poole | 4:21.44 | Littledown | 2012 | |
| 14/u Medley 4 x 100m | Swim Bournemouth | 4:34.41 | Littledown | 2014 | |
| 13/u Medley 4 x 50m | Poole | 2:14.04 | Dorchester | 2025 | |
| 12/u Medley 4 x 50m | Poole | 2:13.57 | Littledown | 2011 | |
| MIXED | |||||
| 14/o Freestyle 4 x 100m | Poole | 3:46.56 | Dorchester | 2025 | |
| 13/u Freestyle 4 x 50m | Poole | 2:00.50 | Dorchester | 2024 | |
| 14/o Medley 4 x 100m | Poole | 4:10.80 | Dorchester | 2025 | |
| 13/u Medley 4 x 50m | Poole | 2:14.07 | Dorchester | 2025 | |