By Chris Hughes A multi-million pound Royal Navy warship backed into another hi-tech British combat vessel yesterday whilst on crucial mine-hunting duties in the Middle East. The older Royal Navy ship HMS Chiddingfold was filmed smashing into HMS Bangor whilst on a long-term mission serving in the Gulf. The incident happened in Bahrain. Sources said no members of the crew were injured in the embarrassing maritime pile-up, but both vessels are being examined for damage. A top-level navy investigation into the mishap – which may be very costly – and how it could have happened with two such sensi…