Are supermarkets open Easter Sunday?

As I have a poorly OH in bed and have been ministering to him all day - upstairs, downstairs, etc etc...making warming broth, cold drinks and dispensing cold remedies. I haven't managed to get out all day - also it's been blowing a hoolie and piddling with horizontal rain. I know, I hear you say, excuses, excuses! Anyway, I need to pick up some extra chocs, a bottle of vino collapso and some flowers for tomorrow.

I'm usually more organised than this .................yes, really ;)

My question is - are supermarkets open tomorrow do you think?

Are supermarkets open Easter Sunday?