Defence Secretary Grant Shapps has been urged to address MPs over a humiliating nuclear missile misfire. The Royal Navy’s Trident missile test failed just eight years after the last unsuccessful attempt. It resulted in the missile crashing into the ocean just yards from the British nuclear submarine that launched it. Shapps and First Sea Lord Sir Ben Kay were onboard HMS Vanguard during the botched test of the single unarmed Trident II missile. The Ministry of Defence confirmed an “anomaly occured” during the January 30 exercise but stressed the nuclear deterrent remains “effective”. “It left …