M25 Hertfordshire, anti-clockwise between M1 [M25 junction 21] and M4 [M25 junction 15]
M25 Hertfordshire - Queueing traffic on M25 anticlockwise between J21 M1 and J15 M4. Travel time is around 90 minutes.
A405 North Orbital Road Bricket Wood, both ways at M25 J21A Roundabout
A405 Hertfordshire - Heavy traffic earlier on A405 North Orbital Road in Bricket Wood at the M25 J21a Roundabout junction.
A411 Exchange Road Watford, both ways at Upton Road
A411 Hertfordshire - A411 Exchange Road in Watford busy but moving around the Upton Road junction.