An update on the rim fixing. I ordered the parts from Tim Hodgekiss http://www.vintagemotorspares.com/ items 527 and 528, they are available elsewhere but mostly from India with a 4 to 6 week wait.
The fit and are exactly correct for the headlamp rim, thanks for the pointer Richard. I feel confident I shall not loose a headlamp rim on the way to Sarratt Village Boxing Day car meet now
Regards Jack
Jack Peppiatt