PMQs review: Robison on Cameron, Miliband and Bercow

Viewers probably do not appreciate how noisy the House of Commons is, and why the Speaker repeatedly steps in to deal with it, says the BBC's political editor.

Nick Robinson explained the directional microphones used for TV coverage give a different impression and those outside the chamber do not hear the "wall of noise" heard by those in the House of Commons.

He debated the heated clashes over party funding, and a potential cap on party donations, with Conservative MP Nick Herbert, Labour's Hilary Benn, and Daily Politics presenter Andrew Neil.