I can't give you a definate exact date because the BBC havn't confirmed it yet but the BBC website says the possible airdate is Saturday 25th August 2012. The 1st 5 episodes plus the xmas special will b shown in 2012 and the remaining 8 will b shown in early 2013.
Hope this helps!
posted over a year ago
Thanks. I read someones comment and it said this Saturday.