Sadiq Khan has pleaded with three councils to permit ULEZ warning indicators to be put up.

A spokesman for the London Mayor urged the Tory-run authorities in Surrey, Kent and Hertfordshire to “do what’s best for their residents and drivers”.

The zone will probably be widened to cowl the entire of London in lower than two weeks which means extra drivers will probably be compelled to pay the £12.50 each day cost for essentially the most polluting automobiles in a bid to enhance air high quality.

His spokesman instructed The Telegraph: “Councils have a responsibility to ensure their residents and all motorists are aware of important changes that may impact drivers.

“By refusing to allow TfL to install Ulez warning signs at key junctions, these councils outside London are not fulfilling their responsibility to ensure their residents and other motorists have all the information they need to avoid driving into the Ulez inadvertently.

“The mayor is urging these three county councils to put their politics aside and do what’s best for their residents and drivers.”

City Hall stated Transport for London had provided to pay the total value of putting in and sustaining indicators.

National Highways has cooperated with TfL which means indicators are in place on main roads resulting in the brand new ULEZ border.

Matt Furniss, a cupboard member for transport at Surrey County Council, stated it could refuse indicators on its roads “whilst there isn’t any mitigation in place to minimise the impact of the expansion on Surrey residents”.

He added: “Whilst the extended scrappage scheme looks to be a step in the right direction, this will have no impact on those outside of London.”

A Kent County Council spokesman stated: “We fully understand and appreciate our obligations as a highways authority, and the safety of road users is always our priority.

“We stand by our decision not to adopt Ulez signage for as long as there is no mitigation to minimise the impact of the expansion of the scheme on Kent residents.

“Kent County Council is committed to the aim of improving air quality, but this must go hand in hand with appropriate mitigations, including better availability of public transport.”

A spokesman for Hertfordshire County Council stated: “The expansion of the Ulez zone by the Mayor of London to Hertfordshire’s borders will price some of the lowest paid in our county off the roads. No amount of signage will change the fact that our residents and businesses face a £12.50 penalty for travelling into the capital.

“It’s time for the mayor to do the right thing and pause the expansion before redrawing the boundary to start at public transport hubs in outer London.”