Active on an unusually warm day in February. Is this unusual?
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It's not all that unusual for Bombus terrestris to be seen in February, at least on warm days in the south of the country, and it is often the first bumblebee species to appear in the early spring each year.
And in fact it is increasingly being seen actively foraging in winter, see the details on the BWARS website:
Entomologist and biological recorder
Many thanks, Martin. Interesting!
Lat/Lng: 51.4, -0.03
OS grid ref: TQ371686
Photographed in an overgrown cemetery