A convicted killer who used a narwhal tusk to help bring down the London Bridge terrorist could be set for an early release from prison. Steven Gallant, 43, chased and helped pin down jihadist knifeman Usman Khan, 28, during the 2019 terror incident. Gallant, who was jailed for 17 years in 2005 for the murder of Barrie Jackson in Hull, was attending a rehabilitation event when fellow participant Khan launched ...