Please start a new thread under the "Radio Interference Locations" heading with details of the place that you are reporting.
I decided that I needed to start a new forum, because there are a lot of places where people park their D2's, and then can't start them again.
This is caused by radio interference, usually from a wireless barcode scanner ordering system in a nearby shop, often a chemist.
The frequency used by the shop is in the same band on the spectrum as the security system in the D2. The vehicle senses this as it queries the key during startup, and interprets it as an attempt to find it's frequency, so disables the startup sequence.
Usually you only need to find the chemist, and ask them to disable their wireless ordering system so you can start your car. Most of the staff there have probably had it happen before, so will not be surprised...
Ideally I hope to make a list in this forum, with a location and who to speak to in which shop.