BMW is still going fine, which is nice. Unfortunately I am still getting significant water ingress in the boot even after replacing the tail light seals and having a small rust hole around the boot edge repaired, so I am going to replace the rubber tailgate seal next because it is incredibly flat and I suspect that is the source of my problems.
A door close sensor has stopped working and thinks the door is always open, I suspect its a wiring issue because the sensor is incredibly simple and appears to operate fine, so that is annoying and has been added to the to-do list.
The headlight wash/wipe system also decided to come to life, and not in a good way, the headlight washer pump was constantly running, as were the wiper motors... For now I've just removed the intensive wash module which has cured the problem, I suspect it was because of corroded pins because one of them was completely blue with corrosion, but I'll leave it out for now because the wiper mechanisms have always been seized anyway.
Module seems fine internally. No bulging capacitors etc and it all looks fresh.
Went out for a drive the other day and took a rubbish picture of it parked in a puddle.
Today I'm going to fiddle with the exhaust because it has come off of one of its hangers, and I'm going to adjust the handbrake, and the belt tension on the power steering belt. Might give it a quick wash and buff if the sun comes out as well.