The research claims that only 33% of those receiving a letter form their ISP would stop illegally downloading content. However, 80% would stop if the letter were followed up by action such as cutting their internet connection.

"A letter would not be enough," Alexander Ross, partner in the media and technology group at Wiggin, tells the BBC. "It does take an ultimate sanction."

The survey follows a declaration last week from outgoing Culture Secretary Andy Burnham that the Government's intention ...