The Manor contained several alien artefacts also known as fallen angels, given to Gryffen by the Department. (TV: Dream-Eaters) Although Gryffen owned the mansion, Police memoribilia was still present. (TV: The Bounty Hunter)
There were sewer tunnels located under the Manor which Darius used as a place to hide during emergencies, stashing large ammounts of supplies there, such as food from the back of a lorry. K9's team faced many encounters here. (TV: The Bounty Hunter, Oroborus)
When the CCPC were put into use in 2048, all human police officers were required to resign. Some, such as Harry Pike were defiant and refused to hand over their job to cyborgs, only to be thrown out. The Department then sent Alistair Gryffen to the mansion for his work place. Because his agoraphobia kept him from leaving his home and lab facility, the Department delivered items of interest for him to examine. He was also aided in his work by his assistant, Darius Pike. Gryffen's main intention was to use the STM to find his lost family. (TV: The Last Precinct) Gryffen's primary contact with the Department was inspector June Turner.
CCPCs chased the dissident known as Stark Reality, also known by his real name, Starkey, and Jorjie Turner, June's daughter, to Gryffen Manor where the two were able to hide. They saw Gryffen use the STM to try to find his family. He was close to doing so, but Starkey interfered; four Jixen warriors came through. They chased the humans through the mansion, eventually cornering Starkey and spraying him with tracking slime. Soon after, K9 Mark I came through and after a short battle, self-destructed. Darius arrived, shocked at what happened. He called the CCPCs, alerting them that Starkey was there, K9 then regenerated into a new form. When he left to complete his orientation protocol, Starkey was arrested. (TV: Regeneration)