SLH Tri Club
- The triathlon section of South London Harriers Club; profile, information about local events, training, race participation and results.
- http://www.slhtriclub.org.uk/

Tri London Triathlon Club
- A club for triathlon, multi sport training, cycling, running and swimming; profile, information about local events, training, race participation and results. [North London]
- http://www.bodylab.co.uk/trilon/

East London Triathletes (ELT)
- Club profile, with information about local events, training, race participation and results.
- http://www.eastlondontriathletes.co.uk/

SAUK Triathlon Club
- A club with a South African flavour; includes profile, information about local events, training, race participation and results. [South West London]
- http://www.sauktri.org/

Kingfisher Triathletes
- Club profile, with information about local events, training, race participation and results. [Kingston upon Thames, SW London]
- http://www.kingfishertriathletes.co.uk/

Hillingdon Triathletes
- Club profile, with information about local events, training, race participation and results. [West London]
- http://www.hillingdontristars.co.uk/

Crystal Palace Triathletes
- Club profile, with information about local events, training, race participation and results.
- http://www.crystalpalace-tri.co.uk/

Greenwich Tritons
- Triathlon club offers its profile, with information about local events, training, race participation and results. [South East London]
- http://www.greenwichtritons.org.uk/