My uncle used to work at the old Lucas Tires place at Greyfriars back in the 80s. One stormy night he was called up by one of his bosses to go to the stores to sort something out - can't remember what it was. Anyways, he made the long drive from Tittensor, opened up, and went into the stores.
Bending down to pick something up, he glimpsed movement across the room. Looking up, he saw a monk, face hidden by the dark shadow of his hood, but obviously looking in his direction. Upon glancing away, then turning back to where the 'monk' had been stood, he saw that the monk had vanished.
I remember my Nan staying over at ours one night when I was little, and me disturbing her by talking. When she came into my room to ask what was going on, I told her I'd been talking to a little boy in a Victorian style sailor suit. She gave me the usual "There's nothing there" reassurances, and I happily went back to sleep. Nothing odd about that, as I used to get high temperatures and hallucinate/ramble on about bollocks etc.
When I was recounting this story to my Mum though, she told me about the time she also heard me talking at night, so came into my room to see what was up. When she asked me who I was talking to, I said, "The little boy in blue". When she asked where he was, I replied, "Right next to you". At which point she got all shivery and stuff. Again, probably attributable to my mental night activities, but cool to think it could have been some camp little Victorian boy's spirit.
At a wedding some years ago, a distant family member by marriage told us about visiting a Cathedral (might have been Lichfield - can't remember) and seeing this nice little chapel. Anyway, this chapel was cordoned off for some service or other and they could hear people singing in there etc, so they decided to walk round the cathedral and go back to the chapel a while later when the service had finished.
So, after a little walk round, they went back to where they thought the chapel was, but they couldn't find it. After a fruitless search they went and asked a member of staff where it was, only to be informed that there was no such chapel, but that they weren't the first to have seen it and not be able to find it.