Powerless - the year the lights went out

A nationwide power cut sends the UK into darkness and the lights are going to be off for a long time. There is no mains water, no petrol and no news. Towns and cities are chaotic and dangerous. Who will survive the months ahead without electricity? But out in the country, Sandra is determined to keep going. Can she keep her family healthy through the long, wet winter? And can they all adapt to life without power?