Chrissxb I live on the German / French border near Strassbourg and here we often find both Police Forces doing checks together (they are mostly looking for drugs and thieves) - a few weeks ago I had left my wallet containing my german ID card at home. I did however have my EURO Drivers Licence.... Anyway I pull up at the road block and a french officer (yes I was still on the german side) came to the window... Bonjour Madame....

WHAT!! did I miss the border post being moved??? - NO it was just another combined check point....
Well anyway he asked to see my ID - which of course was at home

. So I showed him my DL (Euro credit card type with photo) but he isisted that was not a valid form of ID. After having my vehical basically taken apart it was so well searched. I then had to present my ID Card or Passport at the local police station with in 1 hour....
That is the reason I was wondering why anyone in Europe especially in the UK would be allowed to fly on a DL theses days.