Roxeth was a hamlet in the ancient Harrow on the Hill parish, which now forms part of the London Borough of Harrow in Greater London, England.The ancient parish of Harrow on the Hill, or simply Harrow, was one of the largest parishes in Middlesex. Apart from Harrow Town, it encompassed a number of smaller settlements, including Roxeth itself, Greenhill, Harrow Weald, Kenton, Preston, Uxendon, Tokyngton, Sudbury, Wembley and Alperton.