Theophilus Arthur Allen, (1846–1929) was a British architect, probably best known for the Grade II* listed Dome Cinema, Worthing.
From 1880 to 1884, he was in partnership with John Mackland.
Notable buildings Dome Cinema, Worthing (1911), Grade II* listed Oak Hall, Haslemere (1911), Grade II listed in 2010 Kenwood, St. George's Hill (1913)
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