In reply to Dom Whillans:
Bah, I am sure I've unearthed all my back issues, nothing about a Hackney cab. I wonder if it was featured in an issue I saw in WH Smith. I buy old issues cheap from a market stall that sells magazines that are a few months old, see. I have an image in my head of a Practical Classics cover inset of a Hackney cab, I think actually they were travelling to Vladivostok, which is something of a greater challenge I imagine!
If it's any use I can photocopy articles on a UK-to-Prague Skoda convoy, and driving two Trabants across the Sahara?