Services for J
- Japan Natural Clinic
- Jason's Canal Trip
- Jeebon Bengali Healthy Living Consortium
- Jeffreys Conservation Area
- Jeffreys Street Association
- Jenny Wood Nature Reserve
- Jenny Wren Narrowboat and My Fair Lady Cruising Restaurant
- Jewish Blind and Disabled
- Jewish Care
- Jewish Community Centre for London
- Jewish Community Information
- Jewish Gay and Lesbian Group
- Jewish Museum London
- Jewish Womens Aid
- Jo's Cervical Cancer Trust Central London Support Group
- Jobcentre Plus
- Jobs in Mind Urban Growth
- John Dodgson House Vacation Accommodation
- John Walker Chemists
- Joint Commissioning and Strategy Community Services (Council Supporting People Directorate.)
- Joseph Interfaith Foundation
- Jubilee Hall Trust Hampstead
- Jubilee House Sheltered Housing
- Jules Thorn South Camden Recovery Centre
- Jumping Tiger Remedial Exercise and Pilates
- Just for Kids Law