Bombus lapidarius is a bumblebee common within central Europe. It can be found as early as February in the United Kingdom. Queens mate in the late summer, and fertilised females hibernate in old rodent burrows, or other small holes. Females begin laying eggs the following spring, building colonies that can reach upwards of a few hundred bees during their peak.
To learn more about bees in the United Kingdom, check out the Bumblebee Conservation Trust. Their website is full of useful information on identification, bee biology, and a wonderful citizen science scheme by the name of ‘Beewalk’.