According to his CV which is available online, Jack Lothian is writing an episode for the upcoming Series.

Jack Lothian is best known for his scripts for TV Drama's such as Sinbad, Doc Martin, Beaver Falls, Ashes to Ashes and Spooks. His script is currently listed as 'In Development' and will form part of the 2013 half of Series 7.

If Jack Lothian is confirmed to be writing for Doctor Who Series 7, he will the second new writer for the series after Neil Cross wrote an episode, which is rumoured to be titled 'Phantom of the Hex'.