Thanks for the clarification Rob.
Looking at the photo in the service manual it seemed that there was a metal piece something like a guide for the drawer but obviously not. I had a new under-dash section made when I had some interior work done recently. The upholsterer had a pattern for it!
I notice that you have the ashtray option in your map drawer. In looking for information I found that there were two different part numbers. There were also options for an ashtray, or none, in the top timber piece in front of the rear vision mirror.
The photo of the car in action was taken two months ago and before we went into lockdown.
It’s the original draw for the car. I’ll pull it out and investigate why it has dropped. Thanks for the offer to look.