I am aware that imported or re-imported cars can have different manufacture and registration dates, it makes sense.
This is the first time I 've heard of a car being UK supplied for UK use remaining unregistered but I suppose it's possible.
My +4 was built in 1956, sent to a dealer in Ipswich in Feb/Mar 56 where it seems to have languished in the showroom until being returned to Malvern. Then, in Oct 57 it was sent to a dealer in Birmingham who registered it Nov 57. It wasn't sold to its first owner until Jan 58.
