Very big supermarket, I mainly come here on y way home to Scotland to fill with diesel, the fuel station is normally the cheapest around. On the odd occasion I have had to go into the supermarket and have always found what I need, and it's normally something quite obscure like a multi tool to fix my bike rack.
A decent Sainsbury's with the usual stuff. Plenty parking and a petrol station. The staff all seem nice here too.
Argos and cafe. Nice supermarket. Avoid on a sunday afternoon except if you like tutting at people and being tutted at!! ;-)