Drivers are advised the M4 could see increased traffic levels, particularly around junctions 16 and 17, on Sunday 14 March due to a large convoy of bikers headed for and departing a rally at Wootton Bassett in Wiltshire.

As many as 10,000 bikers are expected to attend the rally and junction 16 is expected to be particularly affected by their arrival and departure.

Road users should plan their journey if travelling on the M4 on the day.

For the latest traffic information road users can visit www.highways.gov.uk/traffic, call the Highways Agency Information Line on 08457 50 40 30 or listen to Traffic radio on DAB digital radio or their local radio station.