https://thegreenblue.org.uk/green-blue-business-directory/

The Green Blue is the joint environment programme between the Royal Yachting Association and British Marine, established in 2005 at the Southampton Boat Show. As a boating community we enjoy getting out on the water and experiencing the beautiful environment around us. We therefore play an important role in helping to protect our marine and inland waters and in safeguarding the wildlife and habitats with which we share our boating environment. Explore our directoty of products and services to help individual boat owners, clubs, centres, businesses and other boating organisations become more environmentally sustainable, from fuel efficiency to reducing pollution. British Marine members are taking the lead in many areas, and this directory is a resource providing member products and services that have been designed and developed to help the recreational boating sector minimise its environmental impacts.