In 1936, Uren became a partner in the practice of Slater, Moberley & Uren; later Slater, Uren and Pike. The practice specialised in the design of department stores including the Oxford Street store of John Lewis (1955) and the extension of Peter Jones in Sloane Square (1966). He also designed the Arthur Sanderson & Sons Building (1958, now the Sanderson Hotel) in Berners Street.
