2018 p400e Autobiography here, with built-in factory 360° camera system. I was wondering if I can use the (forward) cam of this system as a dash cam?
As the car is fully connected to the internet I think this must be possible - but don't know where to search (JLR app? Third party app? Something else?). Any help is welcome.

No. There's no way to use the cameras that I am aware of. In fact, LR sell a separate dashcam kit though it's somewhat overpriced for what it is as you'd imagine.

I just fitted a tiny garmin mini camera behind the mirror and bought a hardwire kit from powerfulUK which plugs into the overhead console and makes it a doddle to fit. 2021 L494 D300MHEV Autobiography
2019 Discovery Sport D180 HSE