Following an anonymous tip, police have launched an investigation at Brooklands Pleasure Park where it is believed Mark’s body could be found.
Victim recovery dogs are currently on site and the Fire and Rescue team are wading through the lake.
Detective Chief Inspector Mike Ashcroft, who has been dealing with Mark’s disappearance since last June, is also on the scene.
To read about the police’s investigation at Brooklands Pleasure Park this morning click here
To see the timeline of the investigation click here