With the increase of the energy price cap confirmed, Martin Lewis has said people will die this winter due to the change.

On October 1, the cap will come into effect for around 24 million households in England, Scotland and Wales on default energy tariffs.

This will remain in place until it is adjusted again on December 31.

Mr Lewis said the situation is a “genuine social and financial catastrophe that is putting lives at risk”, and he predicted a further 51% increase in January.

County Times: Martin Lewis has warned of a “catastrophe” (PA)Martin Lewis has warned of a “catastrophe” (PA)

The Money Saving Expert founder told BBC Radio 4’s Today Programme: “I’ve been accused of catastrophising over this situation.

“Well, the reason I have catastrophised is this is a catastrophe, plain and simple.

“If we do not get further government intervention on top of what was announced in May, lives will be lost this winter.”

The average household’s yearly bill will rise from £1,971 to £3,549 from October.

The 4.5 million pre-payment meter customers, who are often the most vulnerable and already in fuel poverty, will see their average annual bill rise to £3,608.

County Times: (PA Graphics)(PA Graphics)

However, Martin Lewis said many are likely to pay much more.

He said: “You could easily be paying £5,000 or £10,000 a year if you have high usage.

“I worry terribly for some of those who have disabled children or disabilities themselves who need lots of electrical equipment to keep their houses warm because of medical conditions.”

Ofgem’s chief executive, Jonathan Brearley, warned of the hardship energy prices will cause this winter.

Mr Lewis said prices will be “unaffordable” for many in January.

He added: “The prediction now in January is up another 51% on top of where we are now and that would take a typical bill and direct debit to £5,386 a year.”

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Mr Lewis also said a movement to refuse to pay energy bills is “growing”, as he called on the next prime minister to spend billions on tackling the crisis.

He said: “We must hope that once we have somebody in place, they will come up with a robust strong policy that we can all get behind that feeds people and heats people so we don’t have people dying because of these price cuts these winters.”

The Money Saving Expert added: “I suspect if it isn’t in place, then people coming from the Don’t Pay movement are going to become a louder voice in this country.”