Now had to call out assistance on 3 occasions due to a flat battery (or rather battery protection kicking in)... always 3 days after last journey and even after the battery was 100% charged using a trickle charger.

Assistance can find no cause, all software up-to-date, battery checking ok.

Anybody else had this (I suspect a few people are seeing it as the assistance chap was saying that LR are trying a few things to resolve it).

I have. pedal guard on, anybody experienced battery issue with one on? Could the pedal guard be putting pressure on the break pedal causing something to not shut down?

Anything else I can check?

Booked into the dealer but not until end of November and you can guarantee that it won't happen when in the workshop.

Aargh...

Mine’s a D350 with the mild-hybrid 48v battery as well as a normal 12v battery. I can leave it for 2 months without any sort of charging and it starts first time. The first ever RR that I’ve owned that didn’t discharge after a couple of weeks or sooner.

It does go in to sleep mode after a few days. The app tells you when it’s in sleep mode. Maybe yours isn’t going in to sleep mode? MY23 D350 HSE
On my 7th RR plus various other JLR vehicles

That’s a good point, I cannot remember seeing the message saying that the “telematics” have shut down. Will keep an eye out.