programme.openhouse.org.uk
Open House - National Audit Office
A Grade II listed building that is home to the NAO, the UK’s independent public spending watchdog. We support Parliament in holding government to account and help improve public services. First opened in 1939 by Imperial Airways, subsequently BOAC and then British Airways, as an airport terminal. The NAO acquired the building in 1984, with the official opening in November 1986 - 40 years ago!