This is LONDON 20/04/05 - News and city section Fanatics want to convert entire world By Andrew Gilligan, Evening Standard Banned in Germany and across the Middle East, Hizb ut-Tahrir, the Party of Liberation, is one of the most controversial - and also the strongest - Islamic groups in Britain today. Hizb rejects the "corrupt society" of Britain and the West and, as George Galloway learned last night, even the most impeccable anti-war credentials are not enough to win its approval. Its central belief is for a single Islamic state - a caliphate - which should start by uniting all...