"Last Tango in Halifax" is a British television series that premiered in 2012. The show follows the story of childhood sweethearts Alan and Gillian, who reconnect later in life after their spouses have passed away. They decide to marry, which brings together their families and leads to various comedic and dramatic situations. The series explores themes of love, family dynamics, and the challenges of aging. It features a talented cast, including Derek Jacobi and Anne Reid, and is set in the picturesque countryside of Yorkshire. The show has received critical acclaim for its writing and performances.