Margaret Hodge, who chairs PAC, said: "Promoters of 'boutique' tax avoidance schemes like the one brought to our attention by the case of Jimmy Carr, are running rings around HMRC.
She added that schemes which exploit loopholes within the system are being taken advantage of.
"It has allowed a system to evolve where the dice are loaded in favour of the promoters of tax avoidance schemes," she said.
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The banking group has also allocated £283m towards tackling its mistreatment of people in mortgage arrears.
Thursday will be a breezy day with sunshine and blustery showers developing for most of us.
She had been with friends at the station at 11pm the previous evening. Officers are now working to find out how she ended up on the tracks.