Raymond J. Evison is the owner of The Guernsey Clematis Nursery Ltd., which is the leading producer of young clematis plants in the world. His work with clematis started at the age of 16 and since then he has introduced more than 100 clematis species and cultivars, which he has developed or bred, to gardeners around the world. His exhibits at the world famous Chelsea Flower Show has gained him numerous Royal Horticultural Society (RHS) Gold medals over many years. In 2004, he was awarded the RHS Reginald Cory Memorial Cup for developing new clematis cultivars. In 1995, he was awarded the RHS Victoria Medal of Honour for his outstanding service to British horticulture and he was made an Officer of the Order of the British Empire by Queen Elizabeth II in 2000 for his services to horticulture in Guernsey. RHS made him Vice President in 2005, a position that he still holds, as well as being a Trustee and Member of Council. He is also the Chairman of the RHS Woody Plant Committee and Plant Advisory Committee. He is currently the President of the Guernsey Botanical Trust and is involved with horticultural conservation work, both on the island of Guernsey and in the U.K.