To celebrate 70 years since the first broadcast on ITV, The Queen visits the set of ITV drama Trigger Point, before attending a reception to mark the occasion and showcase talent across the ITV network. Camilla tried her hand at camera-work and using a clapperboard. . Camilla was welcomed to the set of Trigger Point, which was being filmed on location at Brent Cross Civic Centre in north-west London, where she met actress Vicky McClure, Mary Nightingale, Dermot O'Leary, Dame Carolyn McCall, the chief executive of ITV, as well as various famous actors and presenters. Report by Faragt. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn