Given the following context:

Filton played a key role in the Anglo-French Concorde supersonic airliner project during the 1960s. The British Concorde prototype made its maiden flight from Filton to RAF Fairford on 9 April 1969, five weeks after the French test flight. In 2003 British Airways and Air France decided to discontinue Concorde flights, retiring the aircraft to locations (primarily museums) worldwide. On 26 November 2003 Concorde 216 made the final Concorde flight, returning to Bristol Filton Airport as the centrepiece of a proposed air museum which is planned to include the existing Bristol Aero collection (including a Bristol Britannia).The aerospace industry remains a major sector of the local economy. Major aerospace companies in Bristol include BAE Systems, a merger of Marconi Electronic Systems and BAe (the latter a merger of BAC, Hawker Siddeley and Scottish Aviation). Airbus and Rolls-Royce are also based at Filton, and aerospace engineering is an area of research at the University of the West of England. Another aviation company in the city is Cameron Balloons, who manufacture hot air balloons; each August the city hosts the Bristol International Balloon Fiesta, one of Europe's largest hot-air balloon festivals.In 2005 Bristol was named by the UK government one of England's six science cities. A £500 million shopping centre, Cabot Circus, opened in 2008 amidst predictions by developers and politicians that the city would become one of England's top ten retail destinations. The Bristol Temple Quarter Enterprise Zone, focused on creative, high-tech and low-carbon industries around Bristol Temple Meads railway station, was announced in 2011 and launched the following year. The 70-hectare (170-acre) Urban Enterprise Zone has streamlined planning procedures and reduced business rates. Rates generated by the zone are channelled to five other designated enterprise areas in the region: Avonmouth, Bath, Bristol and Bath Science Park in Emersons Green, Filton, and Weston-super-Mare. Bristol is the only big city whose wealth per...

answer the following question:

Who's local economy is the aerospace industry a major sector? 

Bristol