Roadworks in Chiswell Green are causing traffic chaos for drivers going into St Albans.

Roadworks in Watford Road heading towards St Albans have caused a tailback and traffic is said to be moving slowly with four cars going through traffic lights at a time.

Work to install new destination markings on the M1 southbound carriageway at junction 6a, Chiswell Green, has meant the exit sliproad will be closed and traffic has been diverted via the A405 to join the M25 at junction 21a.