Brittania

Half way through our Vale of Glamorgan (South Wales, UK) walk is Nash Point Cafe and the owner, Tony, stated the film set is of Brittania for it's 2nd series. The photo shows part of the set looking out to sea.

The three extras are:

Milking time (Cows walking the country lane to the milking shed)
The Cyclists (Father and daughter cycling)
The Yacht  (Yacht off Nash Point with buoy and gull)