Members of the Tourism Society can now join the Five-Leaf System for free. It aims to help holiday makers and people travelling on business book with eco-friendly companies, by giving a 1 to 5 leaf scale rating on the eco-performance of hotels, guest houses and houseboats, irrespective of their star rating. It already has on board, travel agents and tour operators from over 20 countries as well as 65 hotels, many of which are big chains; this year they will look to include eco-related product suppliers.