Thanks to all for the information, I've sent a mail to add it to the register, I'll post the pictures from last week up plus a few others shortly.
Bike runs really well, just had the mag rebuilt, the first job I've done on it for 30 years!! (Apart from the odd oil change.)
The only substantially non-original part is the front mudguard whch seems to be difficult to source and a toolbox which I've never had,
I'm very interested in the information from the ordnance record, is this information available to view or copy?
Thanks, John.