Powell has maintained a long standing interest in the field of restoration and repair, together with an abiding interest in problems relating to the durability and permanence of materials, sewing methods, and forwarding in general. Because of this, as well as his outstanding craftsmanship, he has been commissioned to restore many priceless (and irreplaceable) volumes, including The Book of Kells , for the Trinity College Library in Dublin (1953), The Book of Durrow (1954), The Book of Armagh and The Book of Dimma (1956-1957) , as well as numerous comparatively early books in the Aberdeen University Library. In recognition of his outstanding service, he was awarded the degree of Master of Arts, honoris causa (1961), from Trinity College, Dublin, and the O.B.E. (Officer of the Order of the British Empire) in 1976.
Roger Powell places soundness of construction, in both materials and method, ahead of decorative design. He believes that the actual design of a binding must be an integral part of the binding itself, because a book is a tangible object meant to be used. His desire to make bookbinding a work of artistic merit, and his ability to carry out this desire have made him one of England's outstanding bookbinders. (50 , 205 )