Confidence: I'm as sure as I can be.
Notes: The pale marks on the face do it. These are wasp-like bees, not hairy as they carry pollen mixed with nectar in the gut, not on the outside. They are unique among UK bees in that. Several species that are very hard to do even with a body. I do not see them often, so I am not going beyond the genus. Somebody might be braver.