The production won the BAFTA for Best Drama Serial at the 2007 ceremony .
The production was released on DVD on 7 July 2008 , having received a pre-release in North America on 29 April .
The production won the BAFTA for Best Drama Serial at the 2007 ceremony , and was released on DVD on 7 July 2008 , having received a pre-release in North America on 29 April .