The message
from Roland Perry contains these words:

In message
, at
05:40:48 on Tue, 11 Aug 2009, Bob remarked:
I can find lots of references on the web to car parks in Edgware but
no specifics, google earth shows a car park but it looks like a
supermarket one.

I think it's shared with Sainsbury's (or similar).

http://www.tubeplanner.com/cgi-bin/s...ation.pl?id=69

It is shared with Sainsbury's/the Broadwalk Shopping Centre (aka The Mall).
Parking is free overnight I think (the barriers are up). At
shopping/commuting times, charges apply and the first two hours are free
for Sainsbury's customers, I think.

--
Helen Vecht
Edgware