Store cards - are they ever a good deal?

Jess Bown

You could save £100 a year by swapping store cards charging 30% for market-leading credit cards such as the Marks & Spencer Credit Card offering 15 months interest free, according to new figures from price comparison website Moneysupermarket.

But can store cards ever be made to work to your advantage, or do they always offer poor value for money? We investigate.