If you like Neptunes, you might be interested in
PHOTO of the DAY... | Blackbushe Airport - The one-stop Forum in the entry for 16 Nov 17.
One of the contributours to this forum (Flyboy) has written 'The P2V Neptune at Blackbushe Airport' and it occurs to me he might be able to help you.
My own experience of them is very limited; I saw them (Dutch Navy I think) a few times flying over the North Sea when I was detached to Sumburgh Airport in the Shetlands for 4 weeks back in '72.