A powerful 7.6 magnitude earthquake has been recorded 231 miles east of Japan's Honshu island, the US Geological Survey said.
The Japanese weather agency issued a yellow warning for a 1m tsunami in Japan's Fukushima region, due to hit the coast at 6.42pm UK time.
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ITV News spoke to Nick Channing-Williams who described the freezing conditions on board the car ferry that caught fire earlier today.
A widespread frost will affect the UK due to plummeting temperatures along with a lingering fog in several areas.
Members of the Queen's Guard have been assigned the protection of armed police, amid reports they could be targeted by terrorists.