The other night i got a bottle of smirnoff, labelled £9.99 charged £19.99, not a happy chappy i was sent to customer service only to find they will refund double the difference of the price on the shelf to the scanning price, giving me £20 back.
I can asure you that you nearly every week there's a little error, such as offers being a prime example of not being taken off, please make sure that the item is the one matching the label as you will look like an idiot! Remember check your receipts as much as i admire tesco's do not allow them to rip you off!
I'm sure this has already been mentioned but i would just like to give a heads up.
To those who were unaware like me;http://forums.moneysavingexpert.com/showthread.html?t=1075301&page=57