“All of the premieres have always been in London,” Lucas said.
“It’s like coming home to an event we’ve done for the last 40 years, but this is the biggest by far.”
Star Wars fans, many of them waving light sabers, turned out in force for the red carpet event in Leicester Square on Wednesday night.
They cheered as a procession of stormtroopers, led by Darth Vader, marched down the red carpet before the stars arrived.
Director JJ Abrams and cast members including Harrison Ford, Carrie Fisher, Mark Hamill, Oscar Isaac, Adam Driver and Lupita Nyong’o had all flown in from Los Angeles, where the world premiere was held on Monday.