I was entering the round about going straight over on a dual carriageway then I moved into the right hand lane behind me was a car which flashed me so I speed up abit then the car switched on its blue light which at the moment i had realized that an noticed it was Police car so I moved to the left lane an the car drove off at a speed I think he-she was on a emergency call did I do anything wrong will I get into trouble as I got panicked an confused but I didn't obstruct there way in kinda Of way or form any help required