P1130 (Fuel Pressure) - assume low .. or sometimes non existent )
Start outside the house - after the night or a couple of days standing - no problem except it has to turn over quite a few times before firing up.
Go for a drive for a couple of miles. Stop, switch off have a cup of coffee, or leave her for a couple of hours, doesn't matter she starts, not immediately requires a second or two to fire but away she goes.

Drive long enough, for the engine to warm up (eight miles or so) park up and bingo Quick start (Ether) required to wake her up. fires immediately.

Goes like the clappers warm or cold,
No smoke, no cutting out when driving.
PRV changed.
Spill test OK.
No leaks on filter housing (replaced with inline BMW 3 litre diesel filter (in-line)

Anyone any ideas ?