British Airways CityFlyer is a British regional airline, and a wholly owned subsidiary of British Airways with its head office based in Didsbury, Manchester, England. It operates a network of domestic and European services from its base at London City Airport. All services operate with BA's full colours, titles and flight numbers. BA Cityflyer Limited holds a United Kingdom Civil Aviation Authority Type A Operating Licence, meaning that it is permitted to carry passengers, cargo and mail on aircraft with 20 or more seats.
SOURCE: Wikipedia