The pre-inquest review into the death of Alexander Litvinenko will begin today to decide the parameters for the inquest itself.
It is believed Mr Litvinenko, 43, was poisoned with polonium-210 after having tea with two Russians at a London hotel in 2006, but many questions remain unanswered.
The review will decide how many witnesses there will be, how to disclose the details of Scotland Yard's investigation and whether there will be a website for the public to follow the inquest.
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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.