Absolutely spot on Andy for year and model etc, but a 6E, not an 8E. That was just a slip of the typing finger I'm sure.
And Hi to you, esometisse. I'm out in Oz and things were a little different out here. The go-cart scene started around the mid 50's and the 197cc Villiers engines was ideal for the most popular class. Bikes powered with the 125cc and 150cc engines might survive but not those with the 197 E series. Go-cart racing was extremely popular because old 197 Villiers were so cheap. On top of this Japanese bikes arrived here well before they did in the UK. The first Hondas arrived in '56 and both Yamaha and Suzuki were well established by 1959 so old British lightweights were very much el cheapo crash'n'bash stuff. No wonder they are thin on the ground nowadays.
Later Metal Profiles forks might have been okay. I've never worked on late examples but their early 50's examples were just variations on the James and Fanny Bee pogo sticks. Sun fitted MP's and I made new sliders for my mates Sun Cyclone so got a good look at them. At least with Fanny Bee and James I could get factory manuals and find out how they came apart before I started but getting info on the Metal Profiles forks was a stinker. Finally we got some hand drawn sketches from the VMCC Library which were a great help. I could then pick what was bodges by the previous owner and what was factory original. Sometimes it's silly what you'll do to get a bike back to original specification. I've learnt my lesson.
Cheers,