Hertsmere MP Oliver Dowden has said that comments made about coronavirus by a conspiracy theorist on TV amounted to "lunatic conspiracy theories".

In an interview on London Live, conspiracy theorist David Icke shared his unsubstantiated views on the causes behind the outbreak of Covid-19.

He added that mandatory vaccination for the virus would be "fascism".

Mr Dowden, who was recently appointed as the culture secretary, told BBC Radio 4’s Today programme yesterday: “You are absolutely right these are lunatic conspiracy theories and no sensible person would give them a moment's thought.

"Clearly that station is regulated by Ofcom and I would be expecting Ofcom to take appropriate action.

"Clearly they're independent (Ofcom), but I will be in touch with them to understand what action they are taking with respects to that."

An Ofcom spokesperson confirmed it is assessing the comments made "as a priority" after Mr Dowden urged the media watchdog to take action.

A London Live spokeswoman said: "We are aware of the Culture Secretary's comments and have proactively contacted Ofcom to offer our cooperation and support as part of their assessment.

"We will continue to work closely with Ofcom throughout this process."

Last week Ofcom ruled that a local radio station had breached its rules after one of its guests suggested the Covid-19 outbreak was caused by the rollout of 5G mobile technology.

A spokeswoman said that the guest's statements on Uckfield FM "were not sufficiently challenged" and could "undermine people's trust in the advice of mainstream sources of information".

The theory that 5G is linked to Covid-19 has been discredited by experts.

Professor Brendan Wren, professor of microbial pathogenesis at the London School of Hygiene & Tropical Medicine, said a connection between the technology and the virus would be "both a physical and biological impossibility".

The Ofcom investigation into Icke's comments comes after he said another of his videos was "banned" from YouTube.

On Wednesday night he claimed that the video, in which he reportedly said there is a link between 5G technology and coronavirus, had been viewed four million times.

A YouTube spokeswoman said in a statement that the platform is seeking to reduce "the spread of harmful misinformation".

She added: "We have clear policies that prohibit videos promoting medically unsubstantiated methods to prevent the coronavirus in place of seeking medical treatment, and we quickly remove videos violating these policies when flagged to us.

"Now any content that disputes the existence or transmission of Covid-19, as described by the World Health Organisation and local health authorities, is in violation of YouTube policies."

Icke has previously been invited onto chat shows by broadcasters including the BBC and ITV to discuss some of his conspiracy theories.