Whilst at Rainhill, I talked to people about the advantages of using pink(or green?) insulation board for layouts.
I had managed to buy it from one of the large B&Q Warehouse stores, but smaller branches don't sell it, and I have not seen it elsewhere. Knowing what to ask for is important, so I checked out the label on the stuff I bought and details can be found here for one manufacturer.
Odd it also does not come up on B&Q website or eBay. ould be interested in other suppliers, just so I can help others.
Narrow gauge Francophile interested in 1m, 60cm,50cm , 40cm and smaller gauges . Build in scales from 1/6th to 1/24th. Also 1/32nd and 1/35th using 16.5mm track to represent 50cm and 60cm gauges. http://www.rue-d-etropal.com