Channel 4 is a publicly-owned broadcaster that was set up by the government under then-Prime Minister Margaret Thatcher in 1982. It operates as a not-for-profit corporation.
Ferret Fact Service looks at another five claims from the party leaders during a BBC debate ahead of the Scottish Parliament elections.
Our final episode before the Scottish Parliament election is here.
The leaders of the five largest parties in the Scottish Parliament tussled over issues which have dominated the campaigning ahead of May's election.
A Channel 4 documentary called The Truth About Traveller Crime focused on crimes allegedly perpetrated by Travellers. Campaigners say it promoted “negative myths and stereotypes” about the community.