The 73 new POI’s do not show as a New Content symbol in the World Map screen, contrary to the Japan and USA updates, making it very difficult to know where they are located on the map.
That’ll be a competition then. Find all of the new POI. 
Waiting for UK flight plan
Solved after installing the package from the Market Place
Thanks very much for the timely tip. I did the same as you and all POIs appeared. They all have an exclamation point on them also. Not sure what that means but now I can find everything.
Is there any default discovery flight plan for the UK please ?
Yes there is one Iconic flight in the welcome panel, the first panel once you start the simulator. It is called “Westray to papa Westray”
Very short trip but beautiful.