While searching eBay for anything for the Solex 32 DIS carb, I came across this item:
http://cgi.ebay.com.au/ws/eBayISAPI....#ht_1156wt_913
and noticed that the humble Daihatsu Charade G11 Turbo maybe a possible donar for carb parts if not the complete carb? I don't yet know if this is an Oz only Charade model or whether they were available in the Uk but, worth a look all the same.