I just had a flick through a 1976 edition of Motorcycling Monthly,which i had bought for the Reliant roadtest inside,and found the following in the wanted section:
PEEL P50 AND TRIDENT 50CC 3 WHEELERS
made in isle of man around 1961-64, wanted privately.
Also spares W.H.Y? 63 Pevensey Road,Polegate, Sussex
I wonder who it was/is?