Andrena minutula male seems to be pretty common everywhere. Covered in mites poor thing. 2 broods per year, male of first brood have black facial hairs, second brood have white, que!
Andrena trimmerana male, note the reddish colour under the front gastral segments. Again 2 broods, males of first brood have alarge spine at base of mandibles visible here but not in the second brood, que again!
Osmia bicolor male, the female is half black and half red and really obvious and common on the cliffs and dune systems of the gower. Nests in empty snail shells.
and one from the university on 9th Andrena nigroaenea female.