Have never actually seen a ghost but I have many mental stories.
I used to work at a pub called the portway in Herefordshire, and there was one stroppy spirit in there. Threw a stapler at my mate's head when she was alone in the bar.
When working at River Island in my gap year there was another stroppy one who shoved me down the stairs of the stockroom. A friend said she saw a woman up there dressed in black, sewing a load of material. We later found out that years ago it had been a seamtress'. (If that is actually a word).
I left there and worked in the booth hall pub next door, could always feel someone watching me when I went upstairs to the then often empty function room or down into the cellar. The landlord's son was a keen boxer and kept his punchbag upstairs in the function room. One of the girls went up there the one day to get some glasses and was chatting away to Jon while he was training, he wasn't answering. She couldn't really see him cos he was behind the bag. She looked up at him to take the piss out of him for being ignorant...it wasn't him. And she could see straight through this person.
My brother died on a sunday at 8:30am. I woke up at that exact time with a start, sat bolt upright. Although I think I knew deep down, I convinced myself to go back to sleep. Mum came up 2 hours later and I knew before she even got up the stairs. I cried for literally a minute, hysterically (as you do) but sudeenly stopped and felt calm. I slowly got colder and colder, and spent the next few days absolutely freezing. A friend said it was probably Kev with me, which i thought was bollocks. But the one day, I was sat next to our roaring coal fire, wearing two pairs of socks jeans and a huge sheepskin jumper. I was so cold my fingers were blue. In the end I said "Look mate, if you're looking after me that's great, I really do appreciate it. But can you do me a favour and FUCK OFF BECAUSE I AM BLOODY FREEZING!!! I can't take it anymore!"
As soon as I said that, the cold lifted out of me, starting at my head, working down my body and then my feet. I felt warm again. And nearly shit myself with shock.
More recently, Mum moved some photos around on the living room wall. Swapped Kev and his wife's photo with one of my sister and her husband. She made sure they were secure then walked out. She heard a noise and went back into the living room to see the picture of my sister and her husband on the floor, with cracks in the glass. "No need for that you little shit!" she said.
We were talking about him the other day (when it was very hot with no breeze at all) and were taking the piss out of him somewhat. The back door then slammed shut. We laughed for a while about that once we'd apologised.
On a similar day the door slightly opened. "You'll have to open it more than that if you're wanting to come it you fat bugger." Again it slammed shut.
Could be a right stroppy bugger when he wanted to.
Essay over.