Guylian 'seashells' belgian chocolates (trufflina or opus) 3 for £5 usually £4.50 each!
I love these chocolates. One Stop is a sort of Spar small supermarket if people don't know. They had other chocs in their '3 for £5' offer - some Thorntons, Toblerone, After Eights, etc but I thought this was the best deal they had. Enjoy!