Bumble bee, which one?

Bumble bee, which one?

Observation - Bumble bee, which one? - UK and Ireland. Description: This is one of the bees that are nesting in the airvent just below my window. It has a very orange, (not brown) thorax and an orange stripe at the beginning of the abdomen which then goes to black and then black again but with a lot of white hair giving a

This is one of the bees that are nesting in the airvent just below my window. It has a very orange, (not brown) thorax and an orange stripe at the beginning of the abdomen which then goes to black and then black again but with a lot of white hair giving a grey affect.
But what type of bee is it?