I think it could be Ben Aaronovitch but that said he has not done anything for years ! so whats your guess?
I hope it's Terrance Dicks with a good two parter. Although i'm not sure he's into doctor who these days.
shareThat's what I'm thinking.
shareNo one voting fir Eric Saward? Pretty sure he needs the work.
shareProbably Rona Munro who wrote Survival.
shareQuite possibly Terrance Dicks. He's 81, if he's every going to write another episode it would need to be soon. But of course he hasn't written anything for the show since the Five Doctors, a long, long time ago.
shareRumour has it the job's Aaronovitch's......providing he can fit his fat arse through Moff's office door.....
Actually, perhaps it's not him then.
Rona Munro who wrote Survival - and of whom has already been suggested, seems a likely choice.