Spooks (series 1)
Kudos Film and Television developed "Spooks" after releasing Channel 4 medical drama "Psychos" in 1999, though the company initially faced friction from television networks which saw no potential in a post-Cold War spy show. The producers later successfully pitched the series to the BBC after the networks' commissioning teams were replaced. Four episodes were being written when the September 11 attacks took place, and the some scenes were rewritten to take the event into account to show the audience "Spooks's" goal of fighting terrorism. Throughout production, the producers were advised by former intelligence officers from the Security Service, KGB and Central Intelligence Agency. Filming took place from November 2001 to March 2002.
Spooks (series 10)
The tenth series began broadcast on Sunday, 18 September 2011, during the 9 pm to 10 pm timeslot, on BBC One. It was considered a move as previous series were often broadcast on a Monday. The move would make the finale series a "special event" by placing it on a Sunday night. However, it emerged that the final series would face off against the second series of the highly successful ITV1 period drama series "Downton Abbey", which averaged nine million viewers in its first year. The BBC however, defended the position by saying that ""Downton" and "Spooks" are very different shows and offer a real alternative for audiences."