Lillington Gardens is an estate in the Pimlico area of the City of Westminster, London, constructed in phases between 1961 and 1971 to a plan by Roger Westman and Darbourne & Darke. The estate is now owned and managed by CityWest Homes. The estate's high build quality, and particularly the planted gardens of its wide "roof streets", blend sympathetically with the surrounding Victorian terraces. The site surrounds the Grade I listed Church of St James the Less, built in 1859–61. The entire estate, including the church, was designated a conservation area in 1990.