My spending is erratic as I stock up on, usually, imperishables, when they are on offer and I buy wine when it is on offer too.
I think, for two of us, we spend about £40 a week but the bills are up and down because of offers. For examople, just after Christmas we went into Tesco's for a £30 top-up shop but on the way out saw they were doing 25% off six bottles for New Year's Eve so headed straight back in and bought a dozen bottles of Champagne for under a tenner a bottle. This will last us for a while.
We do a lot of 'yellow sticker' shopping for meat to put in the freezer as meat has got so expensive. Since Christmas we have not bought any meat but have been living like kings on our freezer stock. We have had beef, pork, poussin and we will have duck this Saturday. I reckon it cost us about £20 for the lot with leftovers for sandwiches, soup and extra portions for pies. I think we have had about £60ish worth at full price.