Hello David,
Thanks to Richard
I have found the thread. I also have a 10 cwt trailer but an airportable one. It is not yet restored. I know the data plate says build in 1944 by SS Cars Ltd. That would be Swallow Side Car Ltd which later became Jaguar because SS did not sound so nice post war....
Tomorrow I will look up the exact numbers. Hopefully you can find more information in your Chilwell list. Thanks in advance.
Cheers,