The Prince of Wales and Duchess of Cornwall were among attendees at the Royal Film Performance 2011 of Martin Scorsese's film Hugo last night.
Their Royal Highnesses were among the audience for the film about a boy living in the walls of a railway station who is trying to solve the mystery his father was working on before he died - a strange automaton.
The Prince and Duchess chatted to cast members including Harry Potter actor Richard Griffiths.
They congratulated Griffiths on his recent performance in the Alan Bennett play The Habit Of Art at London's National Theatre, which they said they had seen and enjoyed.
They also told him they were looking forward to Hugo, in which Griffiths appears.
Asked about director Scorsese, Griffiths said: "He's a fabulous person, he's a dynamo of a guy."
The premiere was the principal fundraising event of the Cinema and Television Benevolent Fund, the trade charity for the UK film and television industries.
The Prince and Duchess met trustees and beneficiaries of the charity.
Earlier in the evening, Their Royal Highnesses attended a media reception at Buckingham Palace, along with The Queen, The Duke of Edinburgh and The Duke and Duchess of Cambridge.
The reception, attended by guests including Broadcaster Andrew Marr, TV Presenters Fearne Cotton and Phillip Schofield, and a number of editors was hosted ahead of The Queen's Diamond Jubilee next year.
The Palace's East Gallery was renamed the Tweet Suite for the night - for those who wanted to post online messages.