A recent trip around Kent with a photographer friend took me to two disused but kept churches. You can almost do what you want in them, with in reason as they are still consecrated. This shot will eventually go to E&E picture library, once I've got enough files to make a reasonable submission.
If your are interested in photographing Churches, have a look at www.visitchurches.org.uk it has a list a details of similar Churches in your area (UK).
Tech-Info:- 24-70 lens at 24mm, tripod, 2 sec at f16. Processing, masks, curves and lens correction in photoshop.