Motorists travelling on a Friday between 4pm and 7pm on busy motorways are more likely to be killed or seriously injured and should be prepared for longer delays as this is the most dangerous and congested time to be on the roads, according to the RAC Foundation.

Those on the western section of the M25 should be prepared for even longer delays - as this is the most congested time and place on the UK motorway network.

The RAC Foundation has analysed the Government’s ‘Road Casualties Great Britain Report:2003’ and found that more car users are killed or seriously injured on Friday late afternoon / early evening than at any other time during the week.