I know this sounds stupid but I can't find the filter or sump plug on my NC.

Under the car....... there is a plastic guard that covers the void forward of the radiator. Behind this is a metal guard which I removed to reveal the bottom of the gearbox (auto)..... but no sump plug.
If the car was on a hoist the search would be less difficult but I'm working on my back will limited clearance.
Any instructions greatly appreciated.
