Clean air campaigners fear Sadiq Khan could see air pollution as less of a priority than he did.

The two incidents of damage to the same Ulez camera are not being treated as linked, police say.

The latest disruption is part of an ongoing three-year £317m project to update the motorway.

Drivers will be unable to join or leave the M25 and A3 at junction 10 of the motorway.

London Assembly says the mayor must pursue drivers who fail to pay Ultra Low Emission Zone fines.

Drivers have been targeted for entering the congestion charge and Ulez zones despite being exempt.

Diversions will be in place during the works from Friday night to Monday morning.

Drivers are being warned to follow diversion signs in order to avoid charges during the closures.