I have frequently rented cars while vacationing in Germany. However, my driving was limited to countries neighboring Germany, such as France, Holland, Switzerland, Denmark, and Sweden.

I'm planning another trip in August. I will pick up a rental car at Hamburg airport and drive to Munich, Zurich, Geneva, Paris, Amsterdam, before returning it back to Hamburg airport. I'm thinking about making a side trip from somewhere in France to the UK to visit a few friends in Scotland.

Do German car rental agencies(Hertz, for example) allow their high-end cars to be driven to the UK and back?