| The letters do not include illegal streaming services such as Kodi |
UK ISPs are to start sending
"educational letters" to customers identified as downloading copyright
material without paying for it.
The controversial move has been years in the planning, and some experts believe it is too late to be an effective deterrent.
BT, Virgin Media and Sky will start sending out letters on 17 January, and TalkTalk's campaign will begin at the end of the month.
The BBC has seen a sample letter, which will be headed with the customer's telephone number.
It reads: "Get It Right from a Genuine Site' has got in touch with us.
"Get it Right is a government-backed campaign acting for copyright owners who think their content's been shared without their permission.
"It looks like someone has been using your broadband to share copyrighted material (that means things like music, films, sport or books).
"And as your broadband provider, we have to let you know when this happens." It then provides a list of the content in question and directs users to a website with "tips and advice on how to stop it happening again".