Footwell light middle door. Well finally got a working light. Ran a new earth wire and original live wire from the front footwell light bulb holder to a new middle footwell bulb holder and finally we have a working middle door light. If you open the front passenger door first, as this door operates the light switch. Will probably never know, where the original earth wire went to from the middle footwell.
Unless I decide to take the floor up of course, mmmmhh. I think i'll just leave things as they are.