Cameron tribute at Harman's final PMQs as Labour leader

David Cameron has paid tribute to Harriet Harman at her last PMQs as Labour leader.

The prime minister said she has been a "robust adversary" in the House of Commons, and that she was a "fierce champion" for her constituents.

Ms Harman steps down at the weekend, with a new leader of the Labour Party to be announced on Saturday morning at a special party conference.

BBC Politics Live: coverage of PMQs in text and video