It has a unique postcode of SW1A 1AA
Other unique postcodes in London are:-
House of Commons – SW1A 0AA
House of Lords – SW1A 0PW
10 Downing Street – SW1A 2AA
11 Downing Street – SW1A 2AB
HM Treasury – SW1A 2HQ
It has a unique postcode of SW1A 1AA
Other unique postcodes in London are:-
House of Commons – SW1A 0AA
House of Lords – SW1A 0PW
10 Downing Street – SW1A 2AA
11 Downing Street – SW1A 2AB
HM Treasury – SW1A 2HQ