Nisa Extra

Bit pricey, but lots of ethnic choice.

Open early, got lots of stuff, and cool.

Good for getting food and drinks that are not in other stores

It's has everything. Nice staff. Good selection of everything. The Best Aircon and brands of chocolate bars you've never heard of. Stays open until 9. If you happen to stray into this store and new to the area. Fear not the Odd looking people and gangs of kids are quite normal. If you're old enough to remember the Film Deliverance, you will see the connection.

A little bit pricey but has all the essentials that you’d need. It also sells Co-op stuff.

Bit expensive, but surprisingly has a lot of Indian cooking items

I've been shopping there for a couple of years now, every month or so.
Opening and closing times are convenient. Pretty much every staff member I met was friendly and helpful.
You can find any everyday grocery necessities here, however, I am afraid meat/frozen/some fresh groceries/ and some other random products are a little bit pricier than established grocery chains around this area.
But never mind those, because here you can find some specialities: Indian cuisine (most common), few American items, couple eastern European items as well, and many more that you might be surprised to discover there.
Overall, good shop to do some basic or some specific grocery shopping for fair price.