sentences:  Its former area now corresponds to part of the London Borough of Havering in Greater London and parts of the districts of Brentwood and Thurrock in Essex.Hundred meetings are thought to have taken place in Chafford Heath () in the southern part of the ecclesiastical parish of Upminster.The hundred contained the parishes of Aveley, Brentwood, Childerditch, Cranham, Grays Thurrock, Great Warley, Little Warley, North Ockendon, Rainham, South Ockendon, South Weald, Stifford, Upminster, Wennington and West Thurrock.