The Business Secretary, Kwasi Kwarteng, has said there is 'no question of the lights going out' this winter as a result of a huge rise in gas prices. But many smaller energy companies are struggling to stay afloat as they are unable to pass on the higher wholesale costs of gas to their customers because of the energy price cap. Labour has accused the government of complacency when it comes to energy supplies. Some Conservatives have warned of a tricky winter ahead. So what lies behind the current problems, and what can be done to stop it happening again?

Joining David Aaronovitch are :

David Sheppard, Energy Editor at the Financial Times

Producers: John Murphy, Kirsteen Knight, Soila Apparicio