Mining Bee sp? A male?
Well the male part was fine. The orange tarsi gives this up as Hawthorn Mining Bee (Andrena chrysosceles)
Not sure of this one. In fact these with the orange hairs on the hind femur are very confusing at the moment.
In this case there also seem to be orange hairs on the other legs as well. Still lots of brown hairs with pale tips on the thorax. Likely to be a female.
3 sub marginal cells on forewing.
The long hairs on the first two tergites help with this one. Broad-margined Mining Bee (Andrena synadelpha) ♂︎
Are tufts of white hairs on the hind femur diagnostic? Plus the white hairs on the trochanter in the above picture.
Chocolate Mining Bee (Andrena scotica) A fresh female ♀︎Perhaps
again not quite
The tufts of white hair on the abdomen and the pollen hairs white/black make this one Grey-patched Mining Bee (Andrena nitida ♀︎)
Chocolate Mining Bee ♂︎ (Andrena scotica) ?
Buffish Mining Bee Andrena nigroaena ♂︎)
This looked so different. A much longer body with what appear to orange hairs at the end of the abdomen.
But probably A scotica♂︎ again.
Orange - tailed Mining Bee ♂︎ (Andrena haemorrhoa) perhaps?
The long hairs again on the first two tergites. Broad-margined Mining Bee (Andrena synadelpha ♂︎)
A huge thanks to Nick Owens for all the helpful id comments.