Bombus hypnorum was first recorded in England in 2001 and had arrived in the North East by 2009. It has also reached Iceland so is obviously a very successful coloniser.
This photo was taken earlier in the year and shows a worker pollinating my raspberries.
Tree bumblebees naturally make their nests in holes in trees but are also very happy to take over bird boxes.
Click here to read more about this fascinating bee.