Abercrombie and Kent Travel 
ABTA 
Addicted to Travel
The Adventure Company 
AITO
ATG Oxford
Audley Travel
Baobab Expeditions
Bales
British Airways 
Classic Journeys
Collette Worldwide
Exodus 
Expert Africa
Explore Worldwide 
First Choice
Haslemere Travel 
In the Saddle
Kenya Airways 
Matrix Travel
Naturally Africa
Naturetrek
responsibletravel.com
Sandy Travel
The Specialist Travel Company 
TICOS 
Ultimate Travel 
Wildlife Extra 
Wildlife Worldwide 
World Discovery