This bee had a strange habit of raising its abdomen almost vertically as it nectared showing its white underside.
No interactions present.
The underside of the abdomen looks like a yellow brush! In our garden, they seem to choose particular plants for leaf cutting. Last year it was enchanter`s nightshade - haven`t seen any cut leaves this year, although they have been using the drilled holes in our insect hotel "Bugingham Palace."
Lat/Lng: 51.6175, -1.1102
OS grid ref: SU617913