Their use to create opacity, to undermine the effectiveness of regulation and to ensure that owners are unaccountable corrodes all faith in the market itself.

FORBES: Tackling tax havens

Public Accounts is back in action at 3.15pm with a hearing on "the effectiveness of consumer credit regulation".

BBC: Week ahead in committees

And the Public Accounts Committee (at 3.15pm) returns to its hearing on the effectiveness of consumer credit regulation - having berated Wonga and other lenders last week, the regulators, the Office of Fair Trading, and the Financial Services Authority will be in the committee's sights this time.

BBC: Week ahead in committees