Movie fans descended on London's Leicester Square on Monday (September 22) for the world premiere of new British comedy "What We Did On Our Holiday".<br/> <br />Billy Connolly, David Tennant and Rosamund Pike walked the red carpet, which had a distinctly Scottish theme.<br/> <br />The film is centred on a young family who take a road trip to the Highlands to celebrate the 75th birthday of their grandfather, played by Connolly.<br/> <br />During filming Connolly discovered that he was not only suffering from Parkinson's Disease but also deafness and prostate cancer.<br/> <br />SOUNDBITE Actor, Billy Connolly, saying (English):<br/> <br />"No, it was actually great because I hadn't told anyone on the film but I had to say it in the film because my character gets cancer and I have to tell my granddaughter and I was telling the truth and nobody knew. I didn't tell them until after I left the movie."<br/> <br />Pike, who's pregnant with her second child, seems set to become Hollywood's latest leading lady.<br/> <br />She we