An international network that shares online videos of cats and kittens being tortured has members in the UK, the BBC has found.
The network is thought to have thousands of members who post, share and sell graphic images and videos of cats being hurt and killed.
In one group, on an encrypted messaging app, the BBC found evidence of British members suggesting users adopt kittens from the RSPCA to mutilate.
The BBC investigation comes after two teenagers admitted torturing and killing two kittens in a park in Ruislip, north-west London, in May. They are due to be sentenced on Monday.
The following report contains graphic content and descriptions of animal cruelty.
