Just had a great chat with very helpful customer service assistant at Tesco Clubcard.
They had emailed to say that I had unused vouchers, so I searched about and found most of them.
I also found some that were out of date.
Contacted them by phone on number below.
They checked their system and they know which ones I haven't used so they will cancel them and re-issue on next statement at start of November.
Worth a call to check if you have any expired vouchers too.
Also told me that the double up promotion was such a success that they are going to run it again!!
Telephone 0800 591688*, 9am to 8pm Monday to Friday and 9am to 5pm on Saturday
If you have a Clubcard query you can write to us at:
TESCO SCO 5043
Dundee DD2 9XU