Chris Bowlby takes a closer look at the lawyer and former civil servant Sir Thomas Legg, who has been reviewing MPs' expenses claims. Virtually unknown outside Westminster and Whitehall until now, he has in fact been working on MPs' expenses for years, issuing warnings - generally ignored by MPs - that the system had to change.
This edition of
was first broadcast on BBC Radio 4 on Saturday 17 October 2009. You can also download the free Profile