Got 2 for ya one with pics!
OK first one, my dad used to work as a BT engineer in a place called Woolworth in London, by Elephant & Castle, it was an old building (arent they always) and when he worked saturdays i used to go in with him.
The building itself was split into the older exchange and new exchange, joined by a seperating bridge, now when the new one has been used the old one became defunct.
With ppl working there all the hours under the sun (and moon), strange reports would come of ppl seeing shapes, hearing doors slam etc around the bridge. Well when i was with him there, at bout the age of 8 or 9, we used to muck about chair races etc, well he had to go and do some real work, so i stay there spinning in my chair amusing myself. He was gone a good 5mins or more, and then i heard the door (one connected to new building) swing open and slam, so i raced over to see him, as i did i saw a black shape open the other door and enter into the old building - so as u do i followed, across the bridge into this old room, it was musty and dark and i couldnt see anyone there, but it felt oppressive and ominous. Then the door slammed again behind me luckily it was my old man, he said what u doing down here - i said thought i saw u come in, he was the other side of the building! and sai u must have seen Clarence!