I thought you needed when on the continent: 
  
Warning Triangle 
Spare Bulb Kit 
Small First Aid Kit 
Hi Vis Jacket 
GB Sticker or Numberplate mount (I'd go new rear plate) 
Headlight deflectors - Yes they do fit but not designed for 'excessive speeds' 
  
Remember only a very limited sections of the Autobahn is unlimited and I'm still yet to find signs to indicate where it starts and ends. Remember to take all your doc's aswell, v5, proof of insurance, MOT and both parts of your driving liceince (not all essential but speeds up proceeding 'when' you get pulled over)