Welcome to the Forum.
Your mystery bee looks like a queen Buff Tailed bumblebee, aka Bombus terrestris.
When was the photo taken ?
You see these queens on the wing in Spring, then again when this year’s colonies rear “reproductives” - which might be from now onwards if the colony got set up early.
I hope this helps. Good luck with the photography !
Thanks for the welcome and the identification of my photo.It was taken on 10th June.