Galling for Galloway

As George Galloway enters Parliament as the new MP for Bethnal Green and Bow, it will be interesting to see if other MPs use the protection afforded them of Parliamentary Privilege to "libel" him. Whilst the US Congressional reports that he received vouchers, George declares that he has "never used any vouchers". It's like me receving Esso petrol vouchers in the past but claiming I never got a free crystal glass...