Does anyone know where I can get hold of a length of steel tube with a splined end section for making an upper steering-column?

Ta.

Car builder solution cbs

Yep as above. Was on their newsletter recently actually, here.

Thanks fellas!

I think rally design / burton do one as well - but cheaper.

(ok, i'm sure i paid less than that last summer when i bought one & if it wasn't from CBS it would be rally design / burton).

You're right Mike... works out about a fiver cheaper from RD!

Sorry - tenner cheaper!