Brussels, 21/01/2008 (Agence Europe) - Pressure is growing on British Prime Minister Gordon Brown to hold a referendum on the Lisbon Treaty. With discussions in the House of Commons on a Parliamentary ratification of the treaty by the United Kingdom starting on Monday 21 January, a group of 18 MPs from Mr Brown's New Labour Party announced that they would campaign for a referendum, with the clear support of the Conservatives and Liberal Democrats, who have always called for the treaty to be...