TRAVEL chaos hit both rail services and the roads this morning, causing severe delays for rush hour commuters.

First Capital Connect services on the Thameslink line were delayed by up to two hours between Bedford and London St Pancras, following a signal failure.

Many passengers were stranded at stations for hours as overcrowded trains arrived at platforms.

Some took their frustration out towards First Capital Connect on Twitter. @lynseybarry posted: @FirstCC understand delays but not exactly helpful to say don't travel when the majority of people have no choice but to go to work!.

Also EdwardBowden tweeted: @FirstCC Not one tweet or email to customers yet as to what you are doing. For all we know all the drivers could still be in bed!.

FCC staff, who were tweeting in the morning, apologised for the delays. The power was restored to the line by about 10am however the delays still remain..

On the M25 three lanes were closed due to an accident involving a lorry and a car, on the clockwise carriageway between junction 21a (A405) and junction 22 (London Colney).

Congestion stretched back to junction 20 and heavy traffic had also spilled onto the A405 in Bricket Wood.