There were reports of five-mile queues on the M25 this morning following a broken down lorry.
Two lanes were closed on the anticlockwise section of the motorway before the M40 interchange (J16), but these have since reopened.
An image from a traffic camera between Junctions 16 and 17
Reports suggest the congestion stretches to J17 A412 (Maple Cross) and travel time is about 25 minutes.
More to follow
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here