There are too many literary festivals and events to list here but a good guide for the UK is British Council literary festivals guide.

Fantasycon 2009 tba

Hay-on-Wye literary festival 21st-31st May, 2009

World Horror Convention-Apr 30th-May 3rd 2009 Winnipeg

Novacon 38-The UK's longest-established regional science fiction convention.

British Fantasy Society open night at Ye Olde Cock Tavern, 22 Fleet Street, London, EC4Y 1AA-6th June from 6 pm.

Stop press   Stop press   Stop press

WHC 2010 - World horror convention 2010 is being held on the south coast resort of Brighton at the Albion hotel. March 25-28th. This is the first time in its history that it is being held off N.America.

The theme will be 'Brighton shock'-a celebration of Euro horror tradition from Victorian times to present day.

...don't miss it. More information here as it becomes available.