Exelby, Leeming and Londonderry is a civil parish in the former Hambleton District of North Yorkshire, England. It contains three villages – Exelby, Leeming and Londonderry – and RAF Leeming Royal Air Force station. The population of the civil parish as of the 2011 census was 2,788. The parish was renamed because it was felt that "Newton" was not recog…Exelby, Leeming and Londonderry is a civil parish in the former Hambleton District of North Yorkshire, England. It contains three villages – Exelby, Leeming and Londonderry – and RAF Leeming Royal Air Force station. The population of the civil parish as of the 2011 census was 2,788. The parish was renamed because it was felt that "Newton" was not recognised while Londonderry was, being a hamlet.