Advertisements on YouTube should be vetted on traditional TVs like those people to promote scams, dietary pills to protect users from materials and fake celebrity endorsments, Lib Dames said.
The party wants more YouTube ads for more harmful materials for media regulators before appearing on the stage and issuing penalty.
Last week, the annual report by Aftcom found that YouTube had taken ITV forward to become the second most viewed media service of the UK behind the BBC.
Google, who owns YouTube, has said that it “tries to support the advertising ecosystem that is reliable and transparent to users”.
Currently, most of the advertising industry bodies aired on TV and radio are pre-educated before the bodies were broadcast by Clearcast and Radio Central, which is not the case for those who appear on YouTube.
Liberal Democrats argue that this means “online, irresponsible advertisements can often spread before any intervention or to take it down before any intervention”.
Max Wilkinson MP, a spokesman for a culture of Liberal Democrats, said: “It is clear that a platform is now more viewed than almost any traditional broadcaster, still working under a ‘lighter touch’ advertising regime.
“Regulations need to catch with the reality of how people are watching materials and dishonest advertisers should not be allowed to use flaws to exploit people.”
“We cannot allow a two-level system where traditional broadcasters face strong investigation, while digital giants such as YouTube are allowed to mark their own homework.
“This is the time to treat YouTube advertisements for the regulator, such as TV and radio advertisements, to protect Britain consumers from misleading or harmful materials. The government needs to work now.”
Advertising Standards Authority (ASA) monitors TVs, radio and online advertisements and handles complaints after aired.
An ASA spokesperson said: “The advertisements of scams highlighting the liberal democrats are cheating and fall to deal with them under the online security act, which is designed to keep platforms to deal with and stop their services.
“We easily support com efforts to do this work and will play a disruptive role to remove and remove them by reporting and working with platforms.”
Earlier this year, ASA stated that in 2024 it received 1,691 reports of online possible scam advertisements, out of which 177 were marked on online platforms.
It states that the biggest scam trends include using AI, which includes deep videos of celebrities, politicians or members of the royal family supporting their products.
In a scam sent to ASA, Raja Charles was painted recommending a cryptocurrency investment.
YouTube users can report advertisements that believe that Google’s advertising policies violate. Policies include promotion of fake goods, hazardous products such as recreational drugs and hacking software.
This allows some advertisements of cryptocurrency services, but says that the promoter should follow local laws for the country where the advertisement is being targeted.
According to Google, it removed 411.7 million UK advertisements in 2024 and suspended 1.1 million advertising accounts.
Under the Online Safety Act, it is necessary to assess the risk of users who harm online services by illegal content – including looking at the risks of fraud.
The law also oversees how services prevent users from dealing with fraud advertisements.
The Watchdog has said that it is consulting on the practice of a fraud advertising code, which will be applied by Parliament once.