What's happening here? Small pretty wasp shaped insect poking its head into hole in post - then out pops this monster!!!
No interactions present.
If you look very closely at the tiny bee, you can just about make out a flash of white/pale yellow on its face, indicating it could be one of the Hylaeus species.
Lat/Lng: 53.464909053918, -2.2494238615036
OS grid ref: SJ835964
Community garden with small pond