Hey everyone,
I've not had time to do much because I wanted to sort a proper workspace for my tinkering. I've now finished and have plenty of space for my tools and materials. Also plenty of power sockets, lighting even eve. A 12v socket for testing when I do electrical stuff.

I've started the landscaping round the tunnel using expanding foam. So I can access inside incase a train details or something I've made the top removable. Once I have the basic shape I'll be covering with plaster bandage.