Very cool, and there's a Deltic too!

Those Lafarge/Castle cement tanks are nice for the modern modellers, I've seen those on the rails pretty often.
Re the single deck buses, the white one is good for late 70s to the present, while the blue one is good for the 70s and into the 80s - might even stretch to the 90s in rural areas or as school charter bus, they were always old and worn out when I was going to school so an ancient bus would be right.
Simon