Question: British Airways flies to destinations on every inhabited continent, together with wholly owned subsidiary BA CityFlyer, franchise carriers Sun Air and Comair operate aircraft in full British Airways livery, BA CityFlyer is a wholly owned subsidiary airline of British Airways with its head office in Didsbury, Manchester, of which country?

Context paragraphs:
China Aircraft Services Limited: CASL was founded in 1995 as a joint venture among Air China Group (via CNAC(G)), British Airways, Hutchison Whampoa (China), and United Airlines.  Since the 2005, it has been a joint venture among Air China Group (40%), Hutchison Whampoa China (20%), United Airlines (20%), and China Airlines (20%).  China Airlines acquired 13.33% stake from CNAC(G) in 2005 (which was acquired from British Airways in 2003) and 6.67% from Hutchison Whampoa China.  Since 2015, Hutchison Whampoa China became a wholly owned subsidiary of CK Hutchison Holdings.

British Airways Maintenance Cardiff: British Airways Maintenance Cardiff (BAMC), also known as British Airways Maintenance is a major aircraft maintenance facility located near Cardiff Airport and a wholly owned subsidiary of British Airways and part of British Airways Engineering.  It carries out heavy maintenance on all British Airways Boeing longhaul aircraft.

History of British Airways: British Airways (BA) is the flag carrier airline of the United Kingdom.  It is the largest airline in the UK based on fleet size, international flights and international destinations.  British Airways was considered the largest UK airline by passenger numbers from its creation in 1974 until 2008, when it was displaced by low-cost rival EasyJet.  Since its inception, British Airways has been centred at its main hub at London Heathrow Airport, with a second major hub at London Gatwick Airport.

British Airways franchise destinations: British Airways flies to destinations on every inhabited continent.  In addition to the comprehensive list of destinations offered by British Airways itself, many more towns and cities can be reached through BA's franchise and subsidiary operations.  Together with wholly owned subsidiary BA CityFlyer, franchise carriers Sun Air and Comair operate aircraft in full British Airways livery, offer full BA service and staff wear BA uniform.  Bookings are made through British Airways and the carriers are affiliate members of the oneworld alliance.

British Airways Ltd (2012–15): British Airways (BA) Limited was a British airline created in 2012 by British Airways to operate the executive service between London City Airport and New York under the brand name Club World London City.  The Club World London City services returned to being operated directly by British Airways PLC in 2015 although no changes were made to the aircraft, crews or product offered.

BA CityFlyer: BA CityFlyer is a wholly owned subsidiary airline of British Airways with its head office in Didsbury, Manchester, England.  It operates a network of domestic and European services from its main base at London City Airport.  In 2016, BA Cityflyer also began operations from London Stansted Airport.  In 2017 BA Cityflyer starts services from Manchester, Birmingham and Bristol.  This marks the return of BA to the regions after an absence of nearly 10 years.  All services operate with BA's full colours, titles and flight numbers.

BA Connect: BA Connect was a fully owned subsidiary airline of British Airways.  Headquartered in Didsbury, Manchester, England, it operated a network of domestic and European services from a number of airports in the United Kingdom on behalf of British Airways.  The airline operated as a low-cost carrier, with food sold via a 'buy on board' programme (except for flights to London City Airport).

British Airways Engineering: British Airways Engineering is the aircraft maintenance subsidiary of British Airways which provides support services to British Airways and other airlines.  It is responsible for the entire BA Boeing 747 fleet maintenance, cabin interior conversions and general ramp maintenance work for both their own fleet and other airlines.  It also sends some of its own heavy maintenance work out to other companies, although the vast majority of aircraft and cabin interior work is still carried out by BA Engineering itself.

Aer Lingus: Aer Lingus, ( , an anglicisation of the Irish "aerloingeas" meaning "air fleet") is the flag carrier airline of Ireland and the second-largest airline in Ireland.  Founded by the Irish government, it was privatised between 2006 and 2015 and it is now a wholly owned subsidiary of International Airlines Group (IAG), the parent company of British Airways and Iberia.  The airline's head office is on the grounds of Dublin Airport in Cloghran, County Dublin, Ireland.

Comair: Comair was a wholly owned subsidiary airline of Delta Air Lines, headquartered on the grounds of Cincinnati/Northern Kentucky International Airport in Boone County, Kentucky, United States, west of Erlanger, and south of Cincinnati.  Operating under the brand name Delta Connection, Comair operated passenger services to destinations in the USA, Canada, Mexico and the Bahamas.  Comair and Delta Air Lines announced on July 27, 2012, that Comair would cease operations on September 29, 2012.

Supporting paragraphs: British Airways franchise destinations BA CityFlyer
Answer: England