Meanwhile, Mr Blair hit back against a raft of other sleaze and secrecy allegations. Downing Street claimed the Prime Minister had done nothing wrong by backing a potential jet fighter deal involving Labour donor BAe Systems and the Czech government on his recent visit to Prague. And No 10 cited "national security reasons" for the secrecy surrounding a £32million contract with British drugs firm PowderJect Pharmaceuticals to supply smallpox vaccines. Its chief executive, Paul Drayson, donated £50,000 to Labour last year.