I have a copy of P2V In Action (pub Squadron Signal No.68) and Page 29, shows a photo of P-2V s/n 51-15956 destined for UK albeit in ferry and US markings still.
I was not aware that the batches we had under the MDAP , had the MAD tailboom but just the early versions without or with turret? Came across this on a pictorial book of the RAF from the year dot to the 1970s
Cheers