I worked in an apparently haunted office way back when I seventeen. The building was on an old street, but was modern, and had two storey's. There were two businesses, so two front doors, but both shared a corridor at the back where the toilets and mini kitchen area was located. The other business was a small Welsh t.v. company and there was an old cellar in their part of the premises, which they used to store equipment. I think, from what was said, that this was part of the original building.
Because the business I worked for was very new, the bosses had people working at all hours for the first year or two, so one or two people were often there almost all night. I did hear that there was a ghost, but not until I'd been there a few weeks, and by that time I had settled down, and was not aware of anything, despite my interest.
The ground floor office was used for storage, and one went through it to the back corridor to use the loo or make tea, so if you were down there, apart from the SC4 people next door, you were on your own. This corridor flanked the warehouse area of a furniture store, and sometimes you could hear movement, vans, people unloading there, so noises went on, and they weren't alarming. You knew what caused them.
I was washing up the cups, as office juniors tended to back then, when I heard footsteps at the top of the corridor, the direction the woman who worked for the SC4 company would come if she left their office. The whole building was carpet tiled except for that corridor, so I could hear high heels tapping quite briskly. You had to step back to look down the corridor from where I was at the sink, but I didn't look as assumed it was next-door coming to use the Ladies, which was right next to the kitchen The footsteps stopped right there, so I thought she'd gone in, although I didn't hear the door to the loo close. I was not really paying much attention though, as washing-up is rather mundane and boring, so I was thinking of something else. I had just finished when the footsteps walked straight past me, behind my back. It sounded just as if a woman briskly walked behind me, literally inches from my back, and then the steps stopped again. The hair on the back of my neck really did stand up, but I was not scared as much as really shocked. There was no horrible atmosphere or anything.
I stared asking people after that - it was a small company, and every-one was pretty close. No-one minded. The manager's had not said anything because they were simply more concerned with getting their business going, and didn't want the younger employees acting 'silly.' But apparently when they were working there at night, they would hear the steps too, and one night when three of them were working in one room, they heard footsteps run up the stairs from the ground floor, and then the door to their office slammed open. There was no wind, (they locked the door behind them because in theory, if they were upstairs, any-one could have walked in off the street, into the store room and nicked something).
One room on the first floor was used for microfilming; there was a big flat-bed camera in there, and the room was blacked out all the time. That door would apparently open on its own when no-one was in the building save the one person in the camera-room. Nothing at all happened on the second floor, which was the newest part of the building.
The most interesting things did not happen to me. One of the managers would use the Ladies toilet before he left the building, and he was often the last one there. He use it because it had a mirror, and he would com his hair, fix his tie etc. Twice, he said, he saw a woman's face looking back at him, dark hair drawn back, and wearing what he thought was an oval cameo at her throat. He heard the footsteps on that corridor frequently. The SC4 company next door heard, two or three times, the most tremendous crashing and falling noises from the cellar and ran down, thinking that their equipment had fallen from shelves, but found nothing amiss.
I worked overtime at weekends sometimes, in the camera room, and didn't like it at all, but used to play loud music to ignore any noises
Can't say I was ever really frightened, even when alone. I have been to places that oppress me, and alarm me, or give me a feeling of terror (such as Littlecote House) but that building was not one of them.
Anyhow, this being back in the 80's, when a lot of people had liquid lunches, we often used to get a roll and a drink at the local pub, which was an old coaching inn, and so did a lot of other workers on that street. Some of the warehouse workers would come in, and I would ask about 'noises'. They said they heard a woman's footsteps all the time, and louder crashing noises, but never took any notice. (They were in a warehouse, after all). But every-one considered that whole street haunted, and had their own ghost stories. It is supposed to be one of the oldest streets in the town, and on a coaching route to Marlborough and Hungerford back in the day. I wished I could have found out something about 'the woman', but all I could discover was people heard her footsteps, and Mr C allegedly saw her.
The office buildings remained empty after the two businesses moved out, for a long time. Occasionally I'd go past, and almost always see them empty - I don't think that's because they were 'haunted', but the location meant the rents were really high, and parking was crap, also. Now they've been converted into flats, and I often wonder if people hear or see anything there.