Just picked it up from the garage and all that was wrong was the bracket that mounts one of the level sensors (at the front) had broken and the sensor was (i guess) just hanging about.
Hence the headlights default to the low position as a safety set-up (so as to not dazzle someone)
So one new clip, a quick adjustment later, and everything is back to tickity-boo!!
Can't wait to get out for a spin tonight and check it out...
Thank god it's winter!!!!
And thanks to everyone for your advice. Well appreciated...