From BBC website:
BROADCASTING HOUSE OPENS
The BBC considered sites in Trafalgar Square, the Haymarket and Park Lane. Portland
Place was chosen when the home of James Watt, the inventor, was demolished. The
1933 yearbook says there are 800 doors in Broadcasting House - one for every person,
more than one radiator per person, one clock to 8 persons and 8.125 light bulbs per
person. This art-deco 'liner', opened by John Reith is now a listed building.