My local little Sainsbury does that. I use it all the time. It's very handy. The larger one a bit further away let's you do all of that except that there's sti

My local little Sainsbury does that. I use it all the time. It's very handy. The larger one a bit further away let's you do all of that except that there's still a checkout for paying at and they do a re-check of a few items every so often.