A hermit who has spent 40 Years living in isolation in the Scottish Highlands has made a surprise appearance on the Red Carpet of a film festival. Ken Smith left his cabin in Lochaber to attend the premiere in Glasgow of a documentary about his Life . The 74-year-old normally lives without electricity or running water beside Loch Treig - the " lonely loch". He described Glasgow as a very changed city and added: " I've never seen so many people. " Ken, who is originally from Derbyshire, began A Life of wandering after being beaten up during a Night Out , leaving him unconscious for nearly a fortnight. While travelling in Canada, he became interested in the Wilderness - and on his return, he sought out what he felt was the " most isolated place in Britain" and built himself a Log Cabin . His extraordinary story has been told by Lizzie MacKenzie who spent two years filming a documentary for Bbc Scotland . Ken had to Get Up at 04:00 so he could make the two-hour walk to the nearest road for his journey to the premiere in Glasgow. He Said he wasn't nervous - But his first trip away from the Highlands in decades made a Big Impression on him. " The Last Time I was in Glasgow was 30 or 40 Years Ago - it's changed so much from what it used to be, " He Said . " I don't know any of the places or anything like that, in The Past I did. " It's certainly a different form of Life - I've never seen so many people. From where I Am , where I live I can go weeks and never see anybody and I just carry on with my jobs. " Lizzie first met Ken a decade Ago while she was working in a café in the Highlands, after hearing stories from deer stalkers about an old man who lived in The Forest . " I got curious and ended up going to meet Ken and we wrote letters for years and years - and I slowly learned How To make films so I could tell his story, " She Said . She made regular visits with her camera, recording how he lived off The Land , facing struggles as he grows older But also enjoying his close relationship with nature. " The Most challenging one was when Ken did his 50-mile or whatever Round Trip to town and we got up at 03:00 and walked around in The Dark . " I was trying to keep up with him with the camera and I struggled to keep up - I thought I was fit until I tried to follow Ken with a camera. " Over The Years they have became friends, and Lizzie was able to help Ken when he needed hospital treatment after a fall. " She was The One that kept Coming In and doing my shopping while I was in hospital. I was quite grateful for that, " he recalled.