In 1926 Wood created designs for Constant Lambert's 1925 "Romeo and Juliet" for Diaghilev's Ballets Russes, although they were never used. The same year he became a member of both the London Group and the Seven and Five Society plus meeting and befriending Ben and Winifred Nicholson. The Nicholsons' dedication to his work had a great influence and exhibited together at the Beaux Arts Gallery in April–May 1927 and subsequently painted together in Cumberland and Cornwall in 1928. Like Nicholson, Wood admired Alfred Wallis whom they met on a trip to St Ives, and whose primitivism influenced Woods' stylistic development. He painted coastal scenes, and his finest works are considered to be those painted in Brittany in 1929 and during his second trip to Brittany in 1930 when he painted fewer marine pictures and more churches. He claimed that his "mother's people were Cornish and that he got his love of the sea and for boats from his Cornish ancestry".