A BAFTA-nominated film maker turned prospective MP has made an explosive documentary which, he believes, could force a by-election.

Having Premiered in London on Friday, "ToryBoy : The Movie" chronicles a year in the life of media mogul John Walsh.

Despite having no previous political experience, he was selected by the Conservative Party to stand against Labour's Sir Stuart Bell who has held the Middlesbrough seat for 28 years.

Mr Walsh said his film exposed Middlesbrough as a town forgotten by politics with an "absentee" MP who had not held a constituency surgery for 15 years.

"Had Stuart Bell been in London he would have lasted only one or two terms," Mr Walsh explained.

"As a filmmaker this was one of those stories that you could not tell. I could not believe the story unfolding in front of me, how appalling he was as an MP to everyone in the town including Labour councillors."

Mr Walsh, who founded Walsh Bros with brother David, has produced television series and dramas for BBC, Channel 4, Five as well as feature films.

Following the Government's expenses scandal and a stint working at Downing Street, the life-long Labour voter changed his party allegiance and decided to stand as a "Tory boy".

He said he had been serious about becoming an MP and had self-funded his £15,000 election campaign.

"When I got to Middlesbrough I found a town that politics had forgotten and a MP who was there in name only, a truly depressingly affair," Mr Walsh said.

"I hope that my film will raise awareness of what is still going on in the safe political seats and start that long road for change that the people in the town so desperately need."

Last year Sir Stuart scored his seventh General Election victory in the Labour heartland but with a reduced majority.

He secured 15,351 votes followed by Liberal Democrat Chris Foote-Wood with 6,662 and Mr Walsh taking 6,283.

ToryBoy: The Movie cost £50,000, which combines filmed footage with animation.

Premiering at Soho Cinema in London tonight in front of television executives, it could be shown at free screenings in Middlesbrough later this year.

"I think it could force a by-election, and if it does I would have to stand again," Mr Walsh added. "I hope it will get people talking and if my film does that my work is done."

Sir Stuart Bell's office declined to comment last night.