HC Deb 21 March 1968 vol 761 c138W
Mr. Kenneth Lewis

asked the Postmaster-General what will be the alphanumeric address for 10 Downing Street when the system becomes operative in the London, S.W.1, area.

Mr. Joseph Slater

We are planning to code addresses in London South Western Postal Districts in 1969. Until then it will not be possible to say what the postcode for 10 Downing Street will be.

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