Thanks for the tips. As I say Aristocraft looks very much like the tut you buy at the seaside. It only needs to be varnished.
I have been putting petroleum jelly on the rail heads and painting the trackbed and sleepers with watered down UVA glue . B&Q do a soft sand and cement mix that is so weak, it wouldn't hold anything. It just crumbles when dry. But it is the perfect colour for what I need. So far I have sprinkled it on the track by hand, but will be using a flour sifter (or what they use for icing sugar on cakes) in future to level it out better before I need to dig out the edge of the rails and the cente. (First mistake, it got heaped in the centre of the track and affected the couplings). But by usung the flour sifter it should be nice and level and cover the sleepers leaving just a glimpse of them. Now I see your Tenmille track Rik, I shall go to just buying the rails and panel pin them to wood sleepers.
But the rails are the problem. They stand out like two shiny brass rails in a pub! I am putting all the track outside until I need them and hopefully by the time it is finished, they will have weathered.
Maplins do a spray conductive grease (for electronic projects) and I wonder if I insert some in the fishplates if that would give the continuity of power flow.
Steve