"This is a clarion call" Martin Lewis warns credit card owners they need to act ...

A store card or credit card can suit some spenders, however, the interest that you pay on them can soon add up. In order to pay off the debts on old cards, Martin Lewis has previously suggested that shoppers switch it onto a new card which boasts a lower rate - which is usually at zero per cent. This is known as a balance transfer. In the past, Martin advised those with credit or store card debt to pursue this as the deals on which the zero per cent rates were getting longer - but today, the 46-year-old issued a warning.

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Speaking on This Morning, the money saving guru explains that the “bandwagon has turned around”.

In the past, the deals had been spanning around 40 months at zero per cent, but now, it seems they’re getting shorter.

So much so, in fact, that it seems that for the first time since 2013, the longest deals are less than 30 months.

"When you make repayments, the money you’re paying each month clears the actual debt - rather than just the interest," he said.

As such, this means that you end up debt free in a shorter amount of time, Martin advised.

So, if you already have a store card or credit card, the Money Saving Expert pointed out that it could be worth signing up for a deal now - before they get any shorter.

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Martin Lewis: The Money Saving Expert issued a warning for those who have credit card debt (Image: GETTY • ITV)

Martin Lewis: Money Saving Expert’s top deals

“Last week alone two of the prime cards disappeared and the next best deals are substantially worse," he said.

And, when it comes to Martin's top deals, he said: “Sainsbury’s Bank and Halifax, you can shift your debt to them for up to 29 months zero percent,

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