Thanks very much indeed chaps, it's very much appreciated.
I now have the main painting completed, and just need to touch-up a couple of areas, before turning to the detail painting. As I used Xtracolour gloss enamel for the upper surface 'Barley Grey', I'll let this dry for a couple of days, to ensure it's fully hardened, before starting any re-touching etc. (the model will be given a couple of coats of matt clear after the decals have been applied).
The pics show the masking on the under side Light Aircraft Grey before spraying the Barley Grey, and the model after painting and removal of the masks.
Whilst the gloss paint is hardening, I'll continue working on the bits of plastic which are pretending to be ejection seats, and hope to turn them into reasonable representations of Martin Baker Mk10 seats - I might have some progress pics sometime tomorrow. Thanks again for your kind comments.