This offer is back again!! I saw it tonight at Trafford Park Costco. I took this picture tonight. Could be National too!
30 can pack of Coke and Diet Coke for £5.98
"Yes you need a card, or someone with a card, to get in".
The deal is still good, 6 extra cans for 98p on the Tesco deal is good but yes you need a membership card to get in.
*This is NOT a repost as the other offer ended and now this one is back*.
This does not include Coke Zero though I'm afraid.