A convicted killer who used a narwhal tusk to help bring down the London Bridge terrorist has spoken about the attack as well as his 'deep regret' for a murder that saw him locked up for life. Steve Gallant, 43, chased and helped pin down jihadist knifeman Usman Khan, 28, during the 2019 terror incident. The terrorist killed graduates Jack Merritt and Saskia Jones at the event in Fishmonger's Hall before running out onto London Bridge. Gallant was jailed for 17 years in 2005 for the murder of Barrie Jackson in Hull and was attending a rehabilitation event when fellow...