European premieres are plentiful at the festival and include Manchester By The Sea, the controversial--and not very good, in my opinion---Birth of a Nation--and Trolls, which features the voice of Justin Timberlake.
As well as the red carpet glamour, the awards-season promotions and big name stars, the festival also presents a mix of independent, experimental and foreign movies.
But the emphasis is on star power and there was plenty on view on the numerous red carpets throughout the city.
Amy Adams, fresh from Toronto, was busy promoting two movies having their UK premieres---the alien invasion movie Arrival and Tom Ford's dark, psychological drama Nocturnal Animals. Ford himself is in town too, looking exactly like a Tom Ford model---- immaculate dark suit, white shirt, turquoise cuff-links, tinted glasses and just the right degree of carefully tended stubble.
In the last few weeks the the flamboyant fashion designer has been in New York, where he had launched his new "fall line" following a visit to the Venice Film Festival for the premiere of his new film Nocturnal Animals, and a brief stop at his house in Los Angeles before hitting Toronto and now London.
Such a peripatetic schedule must surely dictate that he travels with a veritable wardrobe of suits?
"In fact, I'm travelling with only carry-on luggage," he tells me. "I wear this same suit over and over and over. I have probably quite a lot of them but they're pretty much all the same. I have a uniform; it's easy: I get up in the morning and I put on that uniform."
One of the first on the Odeon, Leicester Square red carpet this year was former Bond girl Rosamund Pike who stars in United Kingdom,which tells the true story of Prince Seretse Khama of Botswana — played by David Oyelowo — who controversially marries a white woman from London — Ruth Williams, played by Pike — in the late 1940.
It is the second year running that a British film has opened the festival, following Suffragettes last year.
It kicks off a 12-day celebration of cinema in the capital which will also include the European premiere of Free Free starring Brie Larson, Cillian Murphy and Michael Smiley.
Also due to be shown as part of the festival is the film Lion, which stars Nicole Kidman, Dev Patel and Rooney Mara. It tells the true story of a five-year-old Indian boy who is separated from his family after taking the wrong train and ends up being raised by an Australian couple, and then tries to be reunited.
There are many more to come but actresses who have brought their best and skimpiest dresses for the red carpets are hoping the weather, which has defied sunny forecasts, soon warms up.