Painter and teacher, educated at King Alfred School, Hampstead. He was a private student of George Mortram Moorhouse and Mary Kendal-Johnson. Spent seven years as a graduate and postgraduate student at Lancaster College of Art, Oxford Art School and Willesden College, teachers including Bernard Meninsky and Walter Bayes. In the early 1950s Tobin set up a studio and summer school in the Lake District and, maybe as the result of five years as a surveyor in the Royal Engineers, produced austere landscapes tending towards abstraction. After his first wife died he moved back to London where he rethought his approach, then recommenced painting in 1961 with great vigour. He quickly produced over 100 large works plus smaller pictures and constructions.