Diversity: 86 books out of 290 by women, just shy of 30%. That's the highest in both numerical and percentage terms since I started measuring. (81 [28%] in 2014, 71 [30%] in 2013, 65 [25%] in 2012, 22% in 2011, 23% in 2010, 20% in 2009, 12% in 2008.)
20 (7%) by PoC, a shade under last year's 11 (5%). (cf 12 [5%] in 2013, 5% in 2011, 9% in 2010, 5% in 2009, 2% in 2008.)
Most books by a single author: 6 by Justin Richards, who also topped my 2014 tally. (Previous winners: Agatha Christie i 2013, Jonathan Gash in 2012.)
Best non-fiction read in 2015: The Life and Death of Mary Wollstonecraft, by Claire Tomalin - brilliant biography of fascinating woman.
Runner-up: Letters to Tiptree, eds Alissa Krasnostein and Alexandra Pierce - I hope we'll be seeing this on some shortlists next year.
The one you might not heard of: Martial Power and Elizabethan Political Culture, by Rory Rapple - looking at the politics of violence in Ireland, not only in the 16th century.
Best non-sff fiction read in 2015: Americanah, by Chimamanda Ngozi Adichie - Bildungsroman set in Nigeria, the USA and the UK, with hair.
Runner-up: Too Much Happiness, by Alice Munro - Brilliant short stories.
Welcome rereads: Ulysses and Les Misérables.
The one you might not heard of: The Twenty-two Letters, by Clive King - the origin of literacy in the Levant.
Best non-Who sff read in 2015: I'm going to cheat slightly, in that I read a couple of them first in 2014, but I'm collectively re-nominating the Arthur C. Clarke Award shortlist, in particular the winner, Station Eleven, by Emily St John Mandel. But I also really enjoyed The Affirmation, by Chris Priest.
The one you might not heard of: The Last Man (aka No Other Man) by Alfred Noyes - novel set after almost all of humanity has been wiped out by a super-weapon, published in 1940.
Doctor Who (and spinoff) fiction
Best Who book read in 2015: City of Death, by Douglas Adams and James Goss - true to the televised story with extra dollops of style.
Runner-up: Walking to Babylon, by Kate Orman - mild homage to Iain Banks as well.
The two that even dedicated Whovians may not have heard of: Doctor Who and the Vortex Crystal and Doctor Who and the Rebel's Gamble, both by William H. Keith, Jr - two US-published game books from 1986 that are way better than the British game books of the same year.
Best graphic stories read in 2015: I'm still making my mind up between The Sculptor, by Scott McCloud, and The Thrilling Adventures of Lovelace and Babbage, by Sydney Padua - leaning a bit more towards the former, if I'm honest.
The one you might not have heard of: De Tweede Kus (originally published in three separate volumes, Ringo, Martha and Hanne), by Conz (Constantijn van Cauwenberge). If you don't read Dutch or French, you have a treat to come when some wise publisher translates it into English.
I don't read a lot of poetry but I do try and get through at least one collection each year. This year that was amply rewarded with Colette Bryce's tremendous The Whole and Rain-domed Universe, reflecting on growing up in Northern Ireland.
Worst book of the year: It's a matter of public record that I bounced off several of the Hugo finalists. It's fairly close at the bottom, but the absolute worst was the infamous Wisdom from my Internet by Michael Z. Williamson.
Next year I shall probably ease off on new sf once the Hugo nominating season is over. (BSFA members! Get you nominations in tonight!) I would like to read a few more comics, and alsowork through some of the more obscure corners of Who literature,