Train numbers repeat. Central Line probably has multiple trains with the same identification visible from the passenger side.
I'm in Calderdale and I've heard odd sounds from the moors too, though I always assumed fox or badger. Never thought it might be something larger. Do you notice any pattern to when it happens?
The honest answer is that we're mostly believers with a healthy skeptical undercurrent. Most people who join paranormal forums are here because they believe something exists that mainstream...
The interesting angle is less 'are these ghosts?' and more 'what's happening in human perception that makes us interpret random noise as meaningful?' Actual paranormal research angle is probably...
Moved with a strange, low gait like it was stalking something. That's actually a really specific observation and differs from the typical 'big dog' misidentification.
Have you considered getting the room investigated properly? There might be a mundane explanation - rising damp, mold, underground water source, electromagnetic fields from nearby power lines - any...
Bioluminescence from fungi or bacteria? The London Underground is damp and has plenty of decay. I know it sounds boring compared to the excitement of paranormal activity, but it's plausible.
Brilliant guide. I'd add: bring a notebook and pen. Not a mobile - the light from screens ruins your adapted vision and the electromagnetic field might affect readings anyway.
I've got a copy of an enhancement done by this American guy - forget his name - back in 1997. It's on an old CD-ROM somewhere in my loft.
Honestly, spend the money on a decent thermal camera instead. EMF metres are alright for ruling things out, but thermal imaging actually shows you something visual you can analyse afterwards.
Really appreciate this guide, been meaning to get more systematic about all this for ages. One question: the GoPro on continuous record - how do you manage the storage?