A Russian TV crew has been thrown out of the hospital where former spy Sergei Skripal is still receiving treatment, after attempting to cast doubt on the nerve agent scandal.

A reporter and cameraman from REN TV were stopped by hospital security guards and asked to delete their film after being caught wandering through corridors at Salisbury District Hospital.

In an apparent attempt to undermine the Government’s claims that Russia was behind an assassination attempt on the former spy and his daughter Yulia, REN TV said the footage showed the British authorities had taken few obvious measures to ensure his safety.

But NHS sources dismissed the fears, saying no secure areas or patient wards had been entered.

The report broadcast on Wednesday came the day after it was announced that Ms Skripal, 33, had been discharged from the hospital on Monday evening.