Edwardian Farm. And I would want to add Ruth, Alex and Peter's other historical series Tales from a Green Valley, A Tudor Feast at Christmas, Victorian Farm, Victorian Farm Christmas and Victorian Pharmacy too. I have the series on DVD but still watch when any are repeated on TV. You can watch on line too.
I wait impatiently for the screening of Wartime Farm, which is currently in production. Ruth, Alex and Peter are certainly not afraid of hard work!