Now I could buy some - but nah! I enjoy the modelmaking part of this hobby probably the best. I have drawn up a plan to give me 8' x 4.5' layout. I have been to the local DIY store and picked up some 9mm MDF and 2" thick polystyrene insulation board - the helpful chaps cut it for me to 2' x 2' - they both came as 8'x4' sheets.
The basic plan - drawn at 2 inches to the foot. The key point is that the road features leave at the middle of the 2' boards, and make it possible to change things aroun.
and with scaled buildings added from "post it's"
The basics - MDF & Poly
PVA and some tools
So it's off to the garden to make a start