Gooden's Nomad Bee Nomada goodeniana
Lacking any red on the abdomen, this individual was strikingly different from the Flavous Nomad Bees Nomada flava that I find at this site more regularly (although not in 2021). Using Steven Falk's field guide to bees I think this keyed out more easily than any other bee I have identified so far.
female Gooden's Nomad Bee Nomada goodeniana showing close-up of face, North Elmham Cathedral Meadows (Norfolk, UK), 19th April 2021
male Gooden's Nomad Bee Nomada goodeniana showing close-up of underside of hind femur, Dillington Carr (Norfolk, UK), 11th April 2022