Looks like a Mining Bee, but what are the small round sacks on its back; eggs maybe?
No interactions present.
The bee is Osmia rufa, and the 'eggs' are commensal mites, probably Chaetodactylus osmiae.
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Lat/Lng: 50.7193, -1.85381
OS grid ref: SZ104910