Literary festivals profile literary fiction in the main (as opposed to ‘genre fiction’). Occasionally, you’ll get a kids author, a crime author, even the very occasional fantasy author attending, but it’s usually dominated by celebs-turned-author, ex-politicians and those who pen litfic. Still, if that’s your bag, then you’ll be interested in the following list of the biggest ones…
Edinburgh International Book Festival, 9-25 Aug 2014: https://www.edbookfest.co.uk/: the big one!
Hay-on-Wye Literary Festival, 22 May-1 June 2014: http://www.hayfestival.com/: Hay-on-Wye has more book shops per head of population than anywhere else in the UK: this festival is a pilgrimmage for many
London Literature Festival, May-June: http://www.southbankcentre.co.uk/whatson/festivals-series/london-literature-festival: one of many lit festivals that take place in London: others include Richmond, Stoke Newington and Soho
AyeWrite Fesitval, Glasgow’s Book Festival, mainly in spring: http://www.ayewrite.com/
Bath Literature Festival, March: http://bathfestivals.org.uk/literature/: an independent festival, but attracted JK Rowling in 2013
Nottingham Festival of Words, Feb probably 2014: http://nottwords.org.uk/: no info available yet
Cambridge Wordfest, twice a year, winter and spring: http://www.cambridgewordfest.co.uk/: well organised, clear info, a committed festival team
Manchester Literature Festival, throughout Oct 2013: http://www.manchesterliteraturefestival.co.uk/: well resourced and running since 2006, it attracts international names
Ilkley Literature Festival, 4-20 Oct 2013: http://www.ilkleyliteraturefestival.org.uk/: extremely well established and long running festival
Cheltenham Literature Festival, 4-13 Oct 2013: http://www.cheltenhamfestivals.com/literature: a comedian, a musician, a matter of taste
Birmingham Literature Festival, 3-12 Oct 2013: http://www.birminghamliteraturefestival.org/: well resourced and attracting big literary names
And there are many more, of course. If you desperately want your own added to the list, just scream.