Hertford Swimming Club
- Includes diary, gala team selections, results, records, nutrition advice, news and report on the AGM. The club offers competitive swimming (age-group and masters), diving and water polo.
- http://www.hertfordsc.co.uk/

Indepth Scuba Diving Services
- Offers diver training, holidays and diving equipment. Diving programs at Odyssey Health Clubs and associated with Mark Warner Resort Hotels. Contact details.
- http://www.indepth.net/

Brickendon Grange Golf Club
- Parkland golf course. Facilities and hole by hole course map.
- http://www.brickendongrangegc.co.uk/

Hertford Lawn Tennis Club
- Offers team tennis, social play, tournaments and coaching. Profile, newsletter, fixtures and results.
- http://www.hltc.org.uk/

Hertford Rugby Football Club
- Includes news, fixtures, history, events and teams.
- http://www.hertfordrfc.co.uk/

Lea Valley Shooting Association
- Clay pigeon shooting, trap, skeet, sporting, game shooting. Located near Hertford.
- http://freespace.virgin.net/alex.mitchell1/lvsa/home.html