The Mayor's badge and chain of office The Mayor's badge, chain of office and mace. Past Mayor's and Freemen and freedoms granted by the Borough Past Mayor's, past chairmen of the urban district council of Coulsdon and Purley and Freemen and freedoms granted by the Borough. Arms of Croydon Arms of the London Borough of Croydon, Arms of the County Borough of Croydon and Arms of the Coulsdon and Purley. Timeline of Croydon Borough A timeline of the Borough. Town Hall The history of the Borough's Town Halls.