Postcodes

[cotswoldslas]

Which 6 letters from the alphabet are not used as a post code in Britain.

[Quizmonkey]

I think they must be looking for CIKMOV - but that's only in the second half of the postcode.

[jockey]

M is used

[jockey]

f j q u y z

[Pebbles]

Q is, ours has that letter in it

[canlock]

my post code ends with qz

[diane1706]

my postcode is YO? ?DQ

[withytree]

Cotswoldslas .Thank you for the answer, I was in the process of working that out, as I caught the tail end of that question on the radio.
If you come from the Cotswolds would you by chance know why the street clock in Broadway is known as" the dummy"