One of the larger clubs doesn't allow any pro cameras in, even if you shoot for a big name publication!
I'd rather not say (can PM you) but it might just have been related to filming rather than shooting, I can't remember now.
I can understand why clubs are suspicious of shooting/filming, what with some of the utter mis-representative crap that is thrown around (from Ibiza Uncovered to Panorama).
If you work for a publication (even a small website), apply for press, otherwise you won't be allowed to take in a "pro" camera.
Some places are better than other. One of the larger clubs doesn't allow any pro cameras in, even if you shoot for a big name publication!