You will find very limited info regarding wiring diagrams and service info. The charger port on Bentley and RR's is in the boot.
Your owner's manual would explain and show you where to look.

 

Thanks for the quick response . My car is one of the very early builds , chassis 01028 , and was used in the first lot of demo's to the trade . The hand book is about as much use as a chocolate teapot !!
Merv

 

If you look on the boot, on the vertical carpet on right side usually, for LHD, you should find a little socket.
Except if it has been taken out or not instatted .
I don't think all cars had it from factory, Seraph and others SY and SZ

 

Thanks Jean7 , I will have a look tomorrow .
Merv

 

Depending on the color of your boot carpet, as the plug is often black and small, it could be discrete.

 

If you want to see the component location diagram for the 2000 Seraph, which has to be very similar, see: https://drive.google.com/open?id=1Lv_Nx9G6itL01BJVInIrxqdVO9y533yT