A Chapman? Chapman-Mercury? Looks quite similar!
OK, it's late, and all cats are grey in the night, so my brain possibly told me 'Yeah, Bristol = Mercury!'...
Could it be FMC though?
Yes - it's the FMC.
Driven in the photo by Jim McCaig at the Borders Speed Trials at Brunton in early October 1956.
(as a side note, Jim Clark was also competing at this event - one of his first)
I seem to have been mistaken that this car had a Bristol engine - probably it is much smaller.
I had also thought that the car was built by Alex Chambers but that may wrong too!
Brain fade is my only excuse and by way of compensation, I have awarded faksta and Allan_L a point each for their endeavours in trawling through the Lester-Bristol puzzle trying to find the solution.
If I discover any more information on the FMC I'll post it here.
In the meantime - here is the original photo with a caption.
