Apologies for my infrequent visits to the forum, I just stumbled on this thread. I was stationed at RAF Henlow (on the OP's list) late 80's to early 90's. There were some stories current at the time on this, one of the oldest of military air bases in th UK, originally an RFC base I think. It had a grass runway and the ATC tower was a listed building and actually made out of wooden packing crates painted green.
Station Headquarters: An unusual triangular shaped building. Duty Clerks, on duty alone in the building from 1700 to 0800 the following morning would routinely lock themselves in the duty bunk on the ground floor and not venture on to the upper floors unless pushed as they could hear heavy (booted) footsteps walking around upstairs even though they knew they were alone in the building. Being a duty clerk meant you had the only extant set of keys for SHQ, the other set being locked up in the guard room and only to be drawn if something drastic happened to the set in possession of the duty clerk. Therefore the duty clerk could be certain he was alone and the only person with physical access to SHQ.
Similar systems worked for duty supplier (store man), my own trade, and I did many stints as duty dog at Henlow. These old buildings are incredibly spooky when your on your own and walking their corridors in the dark. A torch can make it worse due to the shadows cast.
The Pickle Factory: An old derelict building standing alone on the airfield. It had originally been used as a place where canvas was fitted over, say the frames of wings that were then immersed I a vat of chemicals to cause them to go taught - hence pickling.
This building had a high tower at one end with wooden platforms at various heights. It was rumoured that the parachute had been tried out at Henlow with airmen being ordered to jump of platforms at various heights and even out of low flying aircraft to ascertain the lowest height a parachute could safely be opened. Not surprisingly it was rumoured there had been deaths. This part of the airfield was naturally rumoured to be haunted by the fatalities.
Lowly airmen 'Stackers' (store men) such as me lived in what were called 'Mitchell Blocks' - old barracks on the edge of the airfield, access to which meant a long walk across the airfield past the Pickle Factory. On your own this could be very spooky, especially in fog or in the dark. Of course, those semi visible figures you could barely discern were airmen like yourself stumbling around, half cut trying to get back to the block after a night in the NAAFI bar.
Several of the older buildings used by stores were said to be haunted; guys spoke about lights and transistor radios being found on in rooms that were known to have been left vacant with everything switched off.
Men spoke a feeling of not being alone or being watched when they were working alone.
Of course there can be found many rational explanations for these incidents, but I can vouch for the spookiness of these places and buildings.
I can't explain the footsteps heard by the duty clerks - with that system they had the only set of keys and controlled access to SHQ themselves. I had similar experiences in stores when I was duty supplier and I knew I was in control of access and alone in the building.
