Patrick Rock helped author plans for controlling internet images of child abuse, among other things.
A senior adviser to David Cameron was arrested on child abuse images allegations, Downing Street said tonight.
Patrick Rock, who had been involved in drawing up proposals for internet porn filters, resigned after being questioned by police. Officers from the National Crime Agency examined Downing Street’s computer systems and offices used by Mr Rock, 62.
He was an been adviser to the Conservative party for 30 years and got to know Mr Cameron in the mid-1990s when they were both worked for Michael Howard when he was Home Secretary.
The Prime Minister brought him into Downing Street in 2011 to work in the Number 10 policy unit. He took responsibility for home affairs issues and was among officials who were involved in drawing up controls against internet images of child abuse.