The Borage on the allotment is still in flower and still attracting bees. Usually it's done by now. I'm wondering if they might overwinter. 

 Typically Borage is grown as an annual but sometimes lasts long enough into autumn to become a coarse, bristly-looking plant with thick stems as is the case here. In which case it seems to have the stamina to become a short-lived perennial in some locales.

 Then again the allotments are something of a frost pocket. Borago officinalis is a Mediterranean species and unlikely to cope with a prolonged spell of sub-zero temperatures. Go back a few decades and it would be unusual not to have had a hard frost by now in southern England. Now it's common to have to wait till December or January.