Gilbert built the Garrick Theatre in 1889. The Gilberts moved to Grim's Dyke in Harrow in 1890, which he purchased from Robert Heriot, to whom the artist Frederick Goodall had sold the property in 1880. In 1891, Gilbert was appointed Justice of the Peace for Middlesex. After casting Nancy McIntosh in "Utopia, Limited", he and his wife developed an affection for her, and she eventually gained the status of an unofficially adopted daughter, moving to Grim's Dyke to live with them. She continued living there, even after Gilbert died, until Lady Gilbert's death in 1936. A statue of Charles II, carved by Danish sculptor Caius Gabriel Cibber in 1681, was moved in 1875 from Soho Square to an island in the lake at Grim's Dyke, where it remained when Gilbert purchased the property. On Lady Gilbert's direction, it was restored to Soho Square in 1938.