It is Australia.
England won the 2010 T20 world cup
no host country lost the world cup
1996 Cricket World Cup final was played at Lahore in Pakistan.
Twenty 20 cricket was apparently originated originated by a person named Nick Borcich in England. The ECS (England and Wales Cricket Board) introduced a Twenty 20 cricket tournament (The Twenty 20 cup cricket tournament) between the various counties. The true origins of Twenty 20 cricket can be traced to the Twenty20 cup county cricket tournament in England which turned out to be a huge success. In fact, one particular match between Middlesex and Surrey had the highest audience in England for a county cricket match since 1953. This successful Twenty 20 cricket match set the seal on this latest format of world cricket- It was now only a matter of time before world cricket took up the natural evolution of the cricket game.