One update though:
I have had a further message from the late owners son, as to it's history.
So one owner plus demonstrator.Malcolm, I have found the Logbook and service record, and will post them on to you.
The early history of the car is now clearer from the documents.* It was first registered (presumably as a demonstrator) in February 1985; my father bought it three months later in May 1985.
Work has delayed the rear brake refurb, but that shouldn't take too long to do once I get round to them.
I will put it in for a test as previously mentioned, but it will fail due to drivers rear sill end.
It should give a good indicator as to what is needed to be done for the next owner.
History confirmed.
This car was first registered on February 1st 1985 to ...........
On the Log Book:
Austin Rover Group LTD
Company Vehicles
Company Vehicle Control
PO Box 359
Longbridge.
In the service book:
Austin Rover Group Ltd
Canley Road.
Coventry.
Then Purchased by the First and only private owner from:
Charles Clark Stafford via Appleyard's of Wakefield.
(Likely a dealer exchange.)
The price for a 3 month old Montego 1.6L in 1985 was 5199.00 including Road Tax!.