Sergeant Jaget Kumar is a BTP (British Transport Police) officer, working in the London Underground. He assisted the Folly during the murder investigation of James Gallagher[1], and the death of Richard Lewis[2].
After his involvement in several Folly-related operations, he became the go-to person within the BTP if strange and supernatural things happened in the London Underground.[3] He and his wife have a fish and chip night every month, which has romantic associations for them.[4]