The third series of "Inside No.9" was announced in October 2015, with filming beginning in January 2016, at which time Alexandra Roach was named as a guest star in the series.
The third series of "Inside No.9" was announced in October 2015, with filming beginning in January 2016, at which time Sarah Hadland. Javone Prince and Tamzin Outhwaite were named as a guest star in the series.