Police officers were stunned to watch a motorist they signalled to stop pull over in a live lane of traffic on the M25.

The road policing unit uploaded a video onto Twitter overnight of the incident which happened in the Watford area.

The tweet says the unit were called in to help after local officers had spotted a Toyota driving "erratically" on the motorway.

The 45 second clip shows the officers from the Bedfordshire, Cambridgeshire, and Hertfordshire road policing unit racing to intercept the Toyota, reaching speeds of 129mph.

The road policing officers pull up behind the Toyota on the M25 in lane three. Credit: BCH Road Policing Unit

The road policing officers pull up behind the Toyota on the M25 in lane three. Credit: BCH Road Policing Unit

The driver then indicates to move into lane four before stopping. Credit: BCH Road Policing Unit

The driver then indicates to move into lane four before stopping. Credit: BCH Road Policing Unit

When they got behind the target car with their lights flashing in lane three, the driver bizarrely indicated right before crossing into lane four of the M25 - the fast lane - which is completely the opposite side to the hard shoulder, and stopping.

Watch video below

The road unit tweeted: "What not to do when the police ask you to stop! @WatfordPolice officers saw this Toyota driving erratically, and suspected alcohol, so asked us to assist in stopping it.

"Choosing to stop in lane 4 earned the sober driver 3 pts and a £100 fine."

A screenshot of the tweet uploaded by the road policing unit

A screenshot of the tweet uploaded by the road policing unit

After pulling over on the wrong side of the motorway, the police officer stops alongside the Toyota driver and presumably tells them to move off the main carriageway and onto the hard shoulder, in which the driver does so.

The tweet revealed the driver was sober and they were issued with three points on their licence and a £100 fine.

Watford Observer:

The driver eventually pulled up safely on the hard shoulder

After uploading the video to Twitter, followers questioned whether the driver was foreign and may have been confused, while another asked if the Toyota was an Uber.

Officers responded to say the driver was British with a full UK driver's licence and that the Toyota was not an Uber or any other brand of private hire, taxi or hackney carriage.

The incident comes after Highways England launched its 'Go Left' campaign in March, which encourages drivers who have broken down on a motorway in an to always 'go left'.

Acting chief executive Nick Harris said: "No one plans to break down on a motorway, but if the unexpected happens then I want all motorists to know what to do so that they can keep themselves and others safe.

"This new campaign and its ‘Go left’ message is designed to deliver crucial information in an accessible way and to help make motorways safer for the people who use them."