Saw this deal in my local Tescos at the Meadows in Sandhurst today. Buy 8 muller light yoghurts for £2.
However when we paid at the till, noticed that the discount was not applied (they would cost £4.24 for the 8 normally and this is what we were charged)
Went to customer services, girl went off and checked and then came back and refunded us double the difference.
So we ended up getting a refund of £4.52 so they paid us 28p to take them off their hands!
Would assume as prices like this are prob done centrally that this will work elsewhere
I can post receipt copies if needs be for any doubting thomas's out there!