The UK has enacted a law that frowns on content that depicts strangulation or incestuous relationships. It is now banned in England and Wales.
The law is not about stopping people from watching pornography, but the government says certain types of porn make people think it is normal to harm partners during sex. Anyone found with physical copies or uploads in the cloud of this content will be fined up to 2 years' imprisonment. The maximum punishment for making this type of porn and publishing it is 5 years in prison.
https://www.ibtimes.co.uk/england-wales-pornography-strangulation-incest-ban-1826004