Harrison Ford is "always so lovely" to his '1923' co-stars

Helen, 79 - who plays Harrison's on-screen love interest - told PEOPLE: "He's always so lovely to all the other actors. And so we do all sit in the freezing cold on set, on funny, funky, little uncomfortable chairs, and the other guys just gather around Harrison because they just want to be in his company, I think. And I tag along."

The London-born actress admitted that her male co-stars "absolutely love him".

Helen explained: "Harrison is such a bloke. He's what in England we call a bloke.

"He is a guy, and because he's a bloke, all the other blokes absolutely love him, and quite rightfully."

Meanwhile, Harrison previously insisted that horseback riding is "not that difficult".

The iconic actor displays his horseback riding skills in '1923' - but Harrison insisted that his skills aren't as impressive as they may appear.

Harrison - who is also a licensed pilot - told PEOPLE: "Maybe from a contemporary point of view, the horses represent something - some special skill or danger - but they really are not.

"I spent half an hour on a horse, and from a contemporary point of view, you look at that, and say, 'Whoa, people used to do that,' but it really is not that difficult."

Helen, on the other hand, admitted to being wowed by her co-star's talent.

The actress said: "Harrison says that because he's a great rider.

"I was incredibly impressed, I have to say, with watching him gallop off across the Montana hillside."