Re the HID headlights, the exact MOT wording from the 2012 MOT manual is different from the waffle quoted on many websites.
Exact wording cut & pasted here: "(HID) or LED dipped beam headlamps may be fitted with headlamp washers and a suspension or headlamp self leveling system.
Where such systems are fitted, they must work;"
So it DOES NOT say that HIDs must have self-leveling and washers.
It just says that if the car has a form of self-leveling or headlight washers, then they must work.
FYI the Novimat (as in the option on 156 Sportwagons) counts as self-leveling.