Well I was out with the car for 10 mins and it is infinitely better. I would say 80% of the noise is gone now. Instead of constant squeaking below 40mph, it happens literally when you go over something small - like those thick painted raised lines on approaches to junctions or slightly rough road. Pretty confident what is left is down to the rears. The fronts generally take the hardest blows, holding the weight of the engine and the front passengers, so makes sense to me that they'd be the loudest/squeakiest.
Also the slight passenger door rattle seems to disappear when you drop the window slightly - must be rubber on glass (top of the window) in the top of the door frame.