David Cameron calls for companies to act on child porn searches

Prime Minister David Cameron has told the BBC's Andrew Marr that he thinks internet search providers need to do more to stop people searching for illegal images of child abuse.

He said that companies are "not doing nothing, but I want them to do more".

In June firms including Google, Microsoft and Twitter were summoned to a meeting in Whitehall amid calls for them to do more to remove illegal material. They agreed to give the Internet Watch Foundation more powers and resources to search out abusive images.

Internet service providers in the UK have been at the centre of the debate about online images showing the sexual abuse of children following two high-profile court cases in which offenders were known to have sought child pornography online.