Thanks Bruce, at least I know it’s aircraft related.

I have attached a photo of the markings? Am I correct in thinking Westland and Argosy? Although all Argosy’s I have seen have 4 bladed props?

[ATTACH=CONFIG]226848[/ATTACH]

Definitely not Argosy.
I’ve never seen a spider like that, and I’ve seen one or two, so it may be helicopter.

Pete