Found this on MSE, thought I'd post it here
Thanks to no1catman
Just to make everyone aware:
The cut off date of 23rd October doesn't just include the points, it also includes your address details. That is - what address Tesco have as at that date, is where the vouchers will be sent.
So, if you have moved it's important enough at any time to let them know (best to ring), but even more so with Christmas club vouchers, or wanting to convert to 4x for reward - reissues won't be in time for that!
I reiterate - you have four days to contact Clubcard to change your details, if you have moved.
Moreover, you have three days to convert any lost vouchers back to points, to ensure you have them in the Nov mailing.