Before Slow Horses came out, Kristin Scott Thomas didn't really enjoy watching television. That was not too long ago.

Of Down Cemetery Road, Herron said: "It stars Emma Thompson and Ruth Wilson. Morwenna Banks has written the series, and she's done a wonderful job. There's quite a lot of overlap in the teams that made Slow Horses and Down Cemetery Road, and what I've seen of it, which is only little bit, is looking absolutely tremendous."