An atmospheric poster design by Harold Sandys Williamson portraying London brightly dressed shoppers on a grey winter’s day. This poster was published in 1924 by the Underground Group promoting travel by Underground for winter sales, Winter sales are also advertised on a B-Type bus by Oxford Street station. Harold Sandys Williamson designed posters for the Underground Group and London Transport between 1922 and 1939. Harold Williamson was born in Leeds, and studied at the Leeds School of Art, then the Royal Academy Schools (1911-14) where he won the Turner Gold Medal. He was a painter and poster designer whose paintings and drawings are characterized by a keenness for vivid detail. During WW1 he served with the King's Royal Rifle Corps as a war artist. After the War he exhibited at the NEAC and at the RA. Having been elected a member of the London Group in 1933, he served as Chairman of the Group from 1937 to 1943. During the 1930s he regularly served on the London Group hanging committee and designed several catalogues and posters for the Group exhibitions. He produced commercial work for several organisations including Shell, as well as for the Council for the Encouragement of Music and the Arts (forerunner of the Arts Council), formed in 1945. He was Headmaster of Chelsea School of Art between 1930 and 1958, employing Henry Moore as the head of a new sculpture department in 1932.