The energy efficiency rates of England’s 18 000 public buildings have been revealed. By law all public building larger than 1,000 sqm have to show a display energy certificate (DEC).

The Palace of Westminster G
The Bank of England
G
City Hall
E
Treasury’s headquarters on Horse Guards Parade E

No 10 Downing Street
D
The Department for the Environment’s head office
E
Eland House – office of the Department for Communities and Local Government F

Source: The Guardian