I am not affiliated with any of these and try to use the US guys as much as I can but I needed some parts that only the UK could supply reasonably...
I am building up new Puma doors (power window and locks), needed a new rear SW door, glass, and guts, and a sing away tire carrier as well as just any other part I needed for a 25+ YO rover to make it a fun and usable vehicle...
SP landrovers LTD - Body panel Specialists
(I ordered a new rear door, glass, swing tire carrier...(a bit of a tool to work with but good price and pretty fair on shipping)
Island 4x4 - Specialists in Land Rover and Range Rover Parts and accessories for all models. UK and worldwide mail order. - Island 4x4 - Specialists in Land Rover and Range Rover Parts and accessories for all models. UK and worldwide mail order.
(I ordered the two power window regulators from them) Cheap but shipping was a bit higher but overall 33gbp each plus 30gbp to ship)
(I order almost all of my other parts, guts for the doors, rubber seals, etc from them including a new rear door latch set that fits the new tumblers and has an arm for power door lock actuators)...shipping is calculated automatically and everything USD...great company
Got these for the front door wires.. http://www.amazon.com/gp/product/B00...ilpage_o00_s00
And the power actuators... http://www.amazon.com/gp/product/B00...ilpage_o00_s01