Martin Lewis issued a stark warning to the Chancellor during the final instalment of his Money Show on Tuesday night.
Regulator Ofgem has confirmed it is increasing its price cap by a staggering 54%, which will see most bills rise by £693.
The price cap will surge from £1,277 to £1,971 from April 1 - while prepayment customers will be worse hit, with a jump of £708 from £1,309 to £2,017.
