Thanks for the comments gNents. 12 years... watching, watching..... (Although I have been busy on another forum - AWNUTS Again - now no longer operational unfortunately.)
The rivets are by Durmaz - Crystal Sticker Set. They are made of plastic and come on a sheet, each row is on a thin narrow backing and can be peeled off then stuck (self-adhesively) to the model. From a craft shop or similar. There are other larger sizes and I have used some that, when painted, look like bolts (using the 10 foot rule without my glasses).
Here's some pictures.
Next step is to build the cab, chimney and other bits.
Those with keen eyesight will note that my model does not have that see through quality of the usual Emmet-stlye locos. I thought it would make the model to high/large so have painted the exposed parts black.
'I cut it twice and it's still too short!'