A fourth series of Waterloo totalling 20 hours has been ordered for BBC One from Shed Productions following the success of the third series.
Meanwhile, the BBC has extended its 2008 order for Who Do You Think You Are? from eight to ten hours and booked another eight hours for 2009. It is produced by Wall to Wall which was bought by Shed Media last week.
Shed Media chief executive Eileen Gallagher commented: "Waterloo Road is extremely popular with viewers and ratings have continually been strong, especially with the valuable 16-34 audience.
"Who Do You Think You Are? is an incredibly successful brand, and continues to be BBC One's flagship factual programme, consistently delivering on average over six million viewers per episode."