The 72nd World Science Fiction Convention (Worldcon), also known as Loncon 3, was held 14-18 August 2014 at ExCeL London in London, England. The convention committee was co-chaired by Alice Lawson and Steve Cooper and organized as London 2014 Limited. Loncon 3 sold the most memberships (10,833) and had the second largest in-person attendance (7,951) of any Worldcon to date.