Thea Gregory (née Iva Reddish 1929) is an English actress.She appeared in nine British films between 1954 and 1957, such as The Weak and the Wicked (1954) with John Gregson and Laurence Harvey. She is the widow of the actor John Gregson, whom she met while performing with Perth rep in 1946. They were married in Hampstead, London in 1947 and had three daughters and three sons.