Mal & Magnus: Thank you very much for the quick reply! That was really helpful and I greately appreciate!
The markings are looking very fine Magnus, congrats on Santa getting you the means to make your own masks! I sympathise with your view on decals, I feel they are fast becoming an outmoded method at least for markings and insignia. I imagine stencils and such smaller stuff will have to remain in decal form for a while yet....
Once talked to a former Lighting fitter... described the Lightning as 'all flash and no bang' and would have been next to useless in a real war.
The foil I use was recommended by Mal a few years ago, it's called Oramask 810.
! RAF jets: there can never be too many :-) !