Found this amazing app and absolutely wanted to share this to others.
Available for both Apple and Android. You can scan bar codes or search for items, and it will compare all major UK Supermarkets and tell you the price comparison as well as keep you alerted on your favourite items.
When you slowly build up your favourite and regular shopping orders. it can then do an instant compare across the supermarkets, can suggest equivalent products as well.
used many of these apps before all been with poor results, this is the first one which is updated regularly and actual works rather well.
I test any others to find a better app than this for the UK market!