Russian state-owned channel RT could have its British licence reviewed if London concludes that Moscow was behind a nerve agent attack on British soil last week, the broadcasting regulator said today.
Ofcom said in a statement that it had a duty to ensure that broadcast licensees are "fit and proper" to hold their licences.
"We have today written to ANO TV Novosti, holder of RT's UK broadcast licences, which is financed from the budget of the Russian Federation," Ofcom said.
"This letter explained that, should the UK investigating authorities determine that there was an unlawful use of force by the Russian state against the UK, we would consider this relevant to our ongoing duty to be satisfied that RT is fit and proper."
The regulator added that "we would carry out our independent fit and proper assessment on an expedited basis".
Russia Today, now known by its acronym as RT, was set up in the mid-2000s to counter what Russian President Vladimir Putin saw as the dominance of American and British international media organisations and their allegedly pro-Western bias.
The channel is seen by its critics as giving a platform to conspiracy theorists as well as far-right or anti-establishment figures who emphasise Western hypocrisy or corruption.
Labour MP Phil Wilson said British politicians should refuse to be interviewed by the channel, where former Scottish First Minister Alex Salmond has a talk show.
"It is a propaganda mouthpiece for the Russian state and should not be engaged with by any democratic politicians," Wilson said.
May said MPs should be "very wary and very careful" in appearing on RT and said the issue was "obviously... of concern".
The channel responded scathingly on Tuesday, saying: "It is regrettable to see RT so quickly proposed to be sacrificed as a political pawn".
The channel said such a restriction would be equivalent to "doing away with any concept of press freedom in the UK," adding that it played a vital role in "completing the picture of news".
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)