Someone has mentioned cinemas...
I'm pretty sadly into these old barns, and have a fair few pics that I'll happily share. I've been around the Brittania/Panoptican with Gordon Barr, the pics of that day are on his website at:
http://www.chem.gla.ac.uk/~gbarr/cinema ... index.html
Alas, it was the day before I got my shiny new digital camera! Fascinating place, nonetheless.
I've also taken a fair few pics of the Muirend ABC/Toledo during demolition, they're also on his page at:
http://www.chem.gla.ac.uk/~gbarr/cinemas/demolition/
Half of them were poking around it after dark, the other half I was lucky enough to get when a wee security man let me wander around, although it was freezing and my shivering resulted in some blurry pics!
In addition, I managed to sneak into the Grosvenor cinema when they were demolishing it last year, and snapped some original features now gone or hidden. They're at:
http://www.chem.gla.ac.uk/~gbarr/cinema ... index.html
and:
http://www.chem.gla.ac.uk/~gbarr/cinema ... 0-4-03.jpg
I also managed to get a few sneaky shots of the interior of the Kingsway/Vogue in Cathcart Road, near Mount Florida station. They're not presently online anywhere, as I had to sneak in by dubious methods in the middle of a frosty night, but I can email or send a CD of them to anyone who's interested. It's a horrendously scary and dangerously dilapidated building, I wouldn't advise anyone to go in again!
I work in both the Theatre Royal and the Odeon in the city centre, so have a good few pics of long hidden parts of them!
Gary