M1 Southbound J5 to J4. Picture by Highways England.
Drivers are warned to expect delays on the M1 this morning following a three car smash.
The incident occurred on the M1 London bound at J5 A411 North Western Avenue A4008 Stephenson Way, Watford, earlier this morning.
Traffic was held while the cars were recovered from lane three (of three) alongside the entry slip road.
There was also congestion on the M1 to J8 A414 in Hemel Hempstead.
However, all lanes have since been re-opened.
It is not known yet if anybody sustained any injuries.
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