If anyone is interested, might find some help at the following event:
The first Roberts Rendezvous Cycle Rally will be held on Wednesday 13th of June 2018 4pm - 7pm in Guildhall Yard, in the City of London, as part of the City Cycling Festival, which celebrates the first UK bike patent 200 years ago.
It's FREE, there'll be opportunities to have your Roberts judged for various prizes, a few photo opportunities, conversations with builders and staff etc
If Roberts owners haven't seen it before there is a long Roberts history here:
The Roberts website has a contact email on the homepage for frame details, but this generally only works if you know the name of the person for whom the frame was commissioned. And you can follow us @RobertsCycles for further updates