Suspected internet pirates will have 20 working days to appeal against allegations of copyright infringement and must pay £20 to do so, according to revised plans to enforce the UK's Digital Economy Act.
The details are contained in secondary legislation presented to Parliament and a draft code published by Ofcom.
The telecoms regulator said it expected the scheme to begin in 2014.
Campaigners oppose the fee saying users should be innocent until proven guilty.
Under the plans users suspected of accessing or uploading illegally copied files will be sent letters from their internet service provider (ISP), delivered at least one month apart, informing them they are suspected of copyright infringement.
The messages will also contain information about where to find licensed material online.
What are you opinions of this? Do you agree with campaigners that we should be innocent until proven guilty?