Interesting article in this week's AA... suggesting that Erebus is not 'allowed' (presumably by MBAuP) to run any Mercedes Benz branding on the car other than the grille badge, and the model designation on the rear...
From the tone of the article, it seems that Erebus isnt even getting a body panel or loan car deal out of MBAuP... although talks up its relationship with the dealer body.
Mercedes Benz Dealer Team perhaps?