A truck fire has closed all northbound lanes of the M7 near Bernera Road.

Commuters are being encouraged to divert via Camden Valley Way and Cowpasture Road to get back onto the M7.

Traffic is extremely heavy in the area so allow extra travel time.

UPDATE (8AM): The incident has ended and both northbound lanes have reopened on the M7 at Prestons. However, northbound traffic remains heavy.