Buff-tailed bumblebee

I went for a long and leisurely walk all along the little river and besides the (still closed) nature reserve.
I have a little photo guide to British bees so I hope I have identified this one correctly.
I think I saw either a buzzard or kite over Finsbury Park too but it was too far away for me to exactly ID and I am not that good at knowing one bird of prey from another.