Since you brought politics into it, it was the UK's Labour Party (think US Democrats or Trudeau's party in Canada), under Tony Blair that criminalized many types of porn.
They were also the one that started the Snooper's Charter (warrantless monitoring of your online activities), as well as the concept of needing to register with the government, via a monthly subscription card you had to buy for £20 to prove your ID, to watch adult material.
The Guardian is the UK's ultra-left rag of a mainstream newspaper. They are almost as bad as the BBC.