I think you have all the Unidentified in the Supermini category in those 2 pages, usually that category isn't selected before identification.
Unknowns with an ADO chassis, only one: http://www.imcdb.org/vehicle_1614508-ADO16.html
Unknowns with suspected UK origin: 11 pages!
http://www.imcdb.org/vehicles.php?resultsStyle=asImages&yearFrom=&yearTo=&makeMatch=- 2&make=unknown&modelMatch=1&model=&modelInclModel=on&modelInclChassis=on&mk=&origin=- UK&madein=&madefor=&role=