Theresa May is coming under increasing pressure to divulge more details about what happened during a Trident missile test last June. <br /><br /> So far, the British prime minister has refused to deny or confirm if the missile misfired after it was reported that it went of course. <br /><br /> May was told about the test upon taking office in July, shortly before MPs voted to renew the nuclear weapons system.<br /><br /> “I’m regularly briefed on national security issues. I was briefed on the successful certification of HMS Vengeance and her crew. We don’t comment on the operational details for national security reasons,’‘ the UK prime minister said. <br /><br /> It is believed the missile, which was fired off the US coast, was forced to self destruct after it veered inland instead of out to sea. <br /><br /> The timing of the alleged incident is crucial as it took place a few weeks before parliament approved more than 45 billion euros to build new Trident submarines. <br /><br /> Despite accusations of a cover up, on Monday the UK’s defence secretary Michael Fallon also refused to disclose details of what happened during the test fire, declaring absolute confidence in the weapons system.<br />