The BBC weather page had a report on it yesterday and in the video the presenter said yup it's an unusual weather pattern and if this was December - February we'd probably have a ton of snow but given it's October it's just going to be a bit chilly.
I'm no meteorologist, not even avid weather watcher but it does seem like the Jet Stream has been doing more wonky things the last 5 years than it has in the last 20 years. Now this might be an internet driven reporting thing, I don't know, but I certainly find it interesting. Certainly the last few winters there has been heavy reporting on the Jet Stream taking unusual shapes leading to hot and cold air moving into "unusual" patterns. I wonder if this is linked to the current lows in solar sunspot activity?