The series aired two episodes a week from 5 to 19 May 2010 in the United Kingdom.

Just over a year later, the episode aired in the United Kingdom on 8 November 1988.

It aired on 27 February 2012 in the United Kingdom.

It was aired on 4 January 2007 in the United Kingdom.

The finale aired on two separate nights in the United Kingdom.

It aired on 28 December 2006 in the United Kingdom.

It aired in the United Kingdom between 1969 and 1973.

The same episode attracted 20 million viewers when it was aired in the United Kingdom.

It is based and mainly aired in the United Kingdom.

It is also currently the only season to have not aired in the United Kingdom.