Can HMRC's uncollected taxes boost economic growth?
Her Majesty's Revenue and Customs has released a figure which it believes is how much the Chancellor has missed out in uncollected taxes.
Last year the amount was £42bn but this year it has gone down to £35bn.
Radio 5 live Wake Up To Money asked Heather Self, a former senior director at HMRC and now Director in tax practice at McGrigors, where the biggest losses were coming from.
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Wake Up To Money broadcasts weekdays between 0530 and 0600 on Radio 5 live.
21 Sep 2011