No interactions present.
Males don't collect pollen. This looks like a female Colletes, but I would not be certain.
Certainly a Colletes. There are several species that are specialists on Asteraceae, including C. daviesanus, C. fodiens, C. similis, (and later in the season), C. halophilus
Many thanks. Colletes is new to me. Rod
Lat/Lng: 51.46, 0.02
OS grid ref: TQ404753