ID thanks to seeing one on Afterforty? photostream :-)
In my Mum's garden yesterday.
Taken from www.Eakringbirds.com site :-
Sometimes known more commonly as Cuckoo Bees, these are social parasites - a term derived through their habit of taking food meant for the larvae of their host species. There are several groups, including the genus Nomada of which Gooden's Nomad Bee belongs to. Most members are considerably wasp-like, having black/yellow or brown/yellow banding on a hairless abdomen. They are harmless to humans and do not sting. Identification of individual species can be very difficult.