The Big Figure: £105bn

In its annual report for 2013-2014, NS&I said it delivered £3.4bn of net financing and £346m of savings to the taxpayer.

The news came after the government-backed savings organisation announced it was increasing its holding limit on Premium Bonds to £40,000 and reinstating a second monthly £1m prize from August this year.

NS&I has more than 25m customers.

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