article_snippet.sent: Age of Ultron, out on Thursday .
article_snippet.sent: The sequel sees the Marvel Comics superheroes forced into action when a high-tech peacekeeping programme - Ultron - goes badly wrong .
article_snippet.sent: Age of Ultron at Westfield shopping centre in west London last night .
article_snippet.sent: Age of Ultron attended the European premier of the film in London last night .