Andrena cineraria?

When I looked at Mrs Catspaw's 'September Bush' this afternoon, I discovered two silver and grey bees feeding on the blossoms.

This is just one of them. The closest I can get to identifying it is the male Grey (Ashy) Mining Bee (Andrena cineraria), although it is very late in the season to see these out and about. A late or second brood, possibly, given the unusual weather we've had this year?