LonCon3 is the first time this fete of the fantastic has visited the UK since 2006 when the 63rd worldcon hit Glasgow.
Here are the top 21 sci-fi and fantasy authors you should be reading this year.
The World Science Fiction Convention touches down in London this week, bringing together fans of sci-fi, fantasy and horror novels from all over the world.
Here are the top 21 sci-fi and fantasy authors you should be reading this year.