Pollinating bumble bees on Woundwort and pear blossom

Click on the above picture to expand it should you wish to view this magnificently hairy creature up close.
It is on a Woundwort "weed" in a domestic Surrey garden.  It is a good advertisement to allow a few wild flowers in a domestic garden and to avoid all insecticides.

Here is one on Pear blossom.
Can any bee experts suggest which species these bees are?