http://www.guardian.co.uk/media/blog/2011/jul/22/phone-hacking-scandal-live-coverage<snip>
12.27pm: James Murdoch could be imprisoned or fined if the House of Commons finds he told lies to the culture select committee this week, writes Owen Bowcott, the Guardian's legal affairs correspondent.
Imprisonment or a substantial fine could theoretically be imposed as a punishment by parliament on anyone who told lies in evidence to a select committee.
Misleading MPs is deemed to amount to a "contempt of the house" in the same way that refusing to answer a summons to appear before a committee is reported to the Commons. The offender could then be summoned to the bar of the House.
The problem is that the sanctions - involving fine or imprisonment - to enforce any punishment are constitutionally somewhat rusty. Vernon Bogdanor, the former professor of government at Oxford University, has suggested they may have fallen into "desuetude" (disuse).
The House of Commons is not believed to have fined anybody since 1666 and has not "committed anyone to custody", apart from temporarily detaining them, since the 19th century.