Another plant that flowers at this time of year is Ivy Hedera helix making it a valuable source of late pollen for a range of insects. The Stace (1997) key uses hairs on the young leaves and stems as diagnostic features, and I was quite surprised to see how beautiful these star shaped (stellate) hairs are. H helix is categorised into 2 common sub species in Britain, ssp helix with whitish hairs and ssp hibernica with yellowish brown hairs. This looks like H helix ssp helix to me, which I think is the more widespread one.
The flowers are borne in umbels and are mainly green with noticeably yellow anthers. The petals are thick and fleshy while the sepals are black, small and bract like. H helix is the only native representative of the Araliaceae family in Britain.
This last photo shows the sucker like roots on a young shoot which presumably make this plant such an effective climber over walls and trees.