In message , at 21:09:29 on
Wed, 20 Aug 2008, Zen83237 remarked:

I leave the M25 at Chorleywood and I am glad that I don't join the motorway
here in the morning. The queues are often back to the Sarrat turn.

What are the queues like at J17, which is where the OP would have been
exiting?

Does Rickmansworth having anywhere to wait?

It's a fairly conventional station forecourt, so should be OK outside
the rush hours. There's a big pub just across the road and last time I
picked someone up I waited in the pub.
--
Roland Perry