I could go with Andrena, but they are a difficult group to separate, and I'm not skilled in them.
You can have a bash at identifying it here if you like, but I wish you luck.
Hiya mate, not an expert but I had a search around and to me it looks like it could be a Andrena carantonica (google throws up images), looks nothing like the bees in our hives obviously but does look the ones in your pictures .