We used to live in an end terrace in Birmingham, and an alley ran alongside the house. It was a strange house - 3 storeys at the back, and 2 at the front, which meant our living room was actually a floor up and we could see whoever was walking down the alley, very clearly, from our living room window.
The alley led to the back of our houses and a nature reserve, and really hardly anyone ever used it.
One day I was in the living room and heard these really loud footsteps - someone walking extremely heavily down the alleyway. Nosy as ever, I went to look out. It was a man in a sailor's uniform, carrying a long, white canvas bag over his shoulder/back. It was broad daylight, and he looked as solid as anyone. I didn't think it was anything weird or paranormal. Just unusual as Birmingham is about as far from the sea as is possible to get in the UK. So you don't see sailors every day!
Rare to see anyone there at all, so I told my husband later what I'd seen. He happens to be a military historian and told me I wasn't describing the current navy uniform but what sounded like a mid 20thC one...
One of our neighbours, then in his 70s (it was the early 1980s) later told us he'd been a sailor in WW2. So lads from there did join the navy, as well as the other services...
I had another narrow alleyway/stairway encounter, around 1994, in Scarborough. We were just back from abroad but had given up our rented house and so were temporarily 'homeless'. Although we knew we had a council house, about to move into it, it was still a scary, stressful time.
With our literally last few quid in the world, we decided to stay at a cheap B & B by the seaside and give our kids a couple of days' at the seaside, before we moved into the new house.
We had no car so walked from one bay to the other, quite long distances with our 5 year old and a baby in a sling. I decided to go to see Peasholm Park where I'd last been years before, every year, as a child with my parents. It was a fair walk from the B & B. I walked through the usual part of it, but decided to walk deeper into a sort of wooded area, recalling there used to be boating lakes there where the kids played with toy boats. In the 1960s, it had always been packed with kids and parents that time of year. But the further we went, the more obvious it was now disused (it must have been done up by now) and was all dank, and grim and overgrown and not like my golden memories...
The further we went, the more I realised we were no longer passing anyone. No-one. It was really overgrown and creepy. So we decided to find an exit. We could see a small flight of steps, which seemed to lead back upto the road. Not a place I remembered going with my parents, but at least we'd be out of there faster than if we turned back.
But as I was about to get to the steps we stopped as we'd have to carry the pushchair between us, and the stairs were quite narrow and a man was coming down...
Worse still, he was filthy. Quite easily the dirtiest looking person I saw in my life. He was wearing a weird striped outfit. And it looked almost like rags like a proper, old fashioned tramp you used to see years ago - only worse. Far worse. I thought "Bugger, I don't want to pass him on the stairs - it's so narrow, I'd have to touch him!" But my husband seemed unbothered. So I walked up the stairs, with the toddler and baby and husband.
As he passed me, in that really confined spot, the weird thing was I couldn't smell him. And he looked like he'd reek. Passed within mm of him.
At the top of the stairs, we were out on the street (near an old police station and presumably, the old jail?) and I turned to husband and said "Did you just see that man? How come we didn't smell him?"
He asked "What man?"
He didn't see a thing. Despite passing within mm of him.
I think it was only a day or two later I went to the Museum and they had an old Wanted poster for a 19thC convict, escaped from the prison - he was wearing the same clothes I'd seen this man in.
Not that I think it was necessarily him - am sure a number of men escaped from prison in nineteenth century Scarborough!
It was literally impossible for husband not to have seen him. He passed so close.