THIS TOUR OPERATOR started life 25 years ago when founder Bruce Poon Tip visited a small village in the Ecuadorian Amazon, and promised to return with a group of travellers. Today, G Adventures has a not-for-profit arm, Planeterra, that supports sustainable social and environmental projects across the world. Staff rate the good work the firm does highly, with G Adventures taking the top spot for making a difference to the world (94% positive). www.gadventures.co.uk
