These "mystery plant" plant pictures will probably be popping up more and more often as the year progresses. The wildlife survey by KWT last year identified about 150 species, and that was from one guy (Fred Booth) visiting a dozen or so times across the year.
What caught my eye about this one was simply that it was flowering in middle of January (well, 8th Jan). The rest of the plant, best described as a lightweight bush, was just brown twigs. Any ideas?