20-07-2021, 03:38 PM
They were built in France, initially. I recall it was something to do with getting round import taxes. Nick Baldwin wrote a book on them that I reviewed for the Association Magazine a few years back...
https://www.ebay.co.uk/itm/303795422502?...Sw3L9fzKgk
https://www.ebay.co.uk/itm/303795422502?...Sw3L9fzKgk