Halloween warning for households as end of fixed tariffs could add £186 to energy bills | This is Money

Npower, Sainsbury's Energy, Scottish Power, First:Utility, Extra Energy and Co-operative Energy all have tariffs coming to an end on 31 October.
http://www.thisismoney.co.uk/money/bills/article-3257488/Halloween-warning-households-end-fixed-tariffs-add-186-energy-bills.html