Watch this: John Oliver takes on fast fashion

Last Week Tonight video still

Last Week Tonight with John Oliver has taken on the shady world of fast fashion, with America's favourite Professional Englishman focusing on big high street brands' disturbingly patchy knowledge of their own supply chains.

Literally thousands of people in developing countries have died in accidents in clothing factories and many of those who continue working in these dodgy workshops do so for shamefully little pay.

Watch the programme now: