I found that some of what was clearly spam was appearing in my normal email inbox between Christmas and New Year - maybe BT switch off the spam sorter for the holidays.
I have a (completely unsubstantiated) theory for this. Whilst most of Europe are celebrating Christmas, the Russians are not. The BBC website was attacked on Thursday. I had a plethora of spam between Christmas and New Year which, according to my View Full Header originated at Amazon in Germany; unlikely, to say the least.