Margaret Hodge, the chair of the Public Affairs Committee has said the HMRC are "behind the times" when it comes to tax avoidance schemes.
Speaking to Daybreak she said it was a "cat and mouse game", with those who exploit legal loopholes, always one step ahead.
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Rain will spread eastwards across southern areas tonight. Clear and frosty in the north.
Political leaders will go head-to-head at ITV's studios in MediaCityUK in Salford, ITV has confirmed, as the set for the event is unveiled.
More than 100 people claiming to represent working people across Britain have signed a letter backing Labour in the general election.