The fourth and final series of The Green Green Grass originally aired between 8 January 2009 and 5 March 2009, beginning with the episode "The Path of True Love".
Samantha Sutherland's character, Sara, who was Tyler's girlfriend, was a regular throughout the series before as was Llewellyn (Alan David) and Ray (Nigel Harrison).
[1] The series was filmed at Teddington Studios, with a live audience.
This particular series was written by Jim Sullivan, John Sullivan, Keith Lindsay, David Cantor, Robert Evans, Gary Lawson and John Phelps.
The series slumped slightly with viewers, with the first episode, "The Path of True Love", gaining 4.07 million viewers, which was not in the top thirty highest ratings.