Wales’s children’s commissioner has joined calls for a change in the law to stop parents smacking their children, as assembly members debate the issue.
Keith Towler said physically punishing children does not work and there was “no such thing as a safe smack”.
AMs will be allowed a free vote on a motion calling for legislation.
Meanwhile, one senior MP wants the assembly’s legal powers over smacking clarified by the Supreme Court.
A cross-party group of four AMs is urging the Welsh government to introduce legislation intended to outlaw smacking by removing the defence of “chastisement” for assaulting a child.