The London Book Fair 2016
The London Book Fair seems a long way away -- it's in April. But it's actually only 6 weeks! There's a seminar programme on the official website, though I don't think it's complete yet. The Author HQ seminar programme isn't on there yet.
It's usually well-worth attending if you can. The website is London Book Fair. The Twitter address is @LondonBookFair and the hashtag to use is #lbf16