Before and after Second World War service in the army, Lasdun worked for a while with Berthold Lubetkin's Tecton practice, becoming a partner. During this period he also completed one private house in Paddington, in Le Corbusier's style. After the war, Lasdun worked with Lindsay Drake on the Hallfield Estate, which had been planned by Lubetkin and Tecton in a similar patterned, tightly planned idiom to his Spa Green and Priory Green Estates. Lasdun's Hallfield School was the first clue to his mature style, in its use of bare concrete and angularity, as well as its more human scale.