I had the same occur on an Audi a few years back, driven every day for the first 5 days left for one day and flat. Turned out to be a faulty radio.
Lesson Don't buy an Audi

So much for Vorsprung durch Technik Asbo!

But seriously Aeromax, you must have a fault somewhere as I have left my Aero 8's (similar electricals) at times for about 3-months without the battery discharging, and I think the only 'draw' on the battery is the clock, unless you have had some other anti-theft device fitted. Personally, I would have a word with Mark Baldwin at the factory about the problem, before taking any precipitate action. :snowgrin: