The family of Michael Anton O'Connor said they were left "feeling sick" after one of their son's nine murderers taunted them in court.
Paula Usherwood used her car to block their son's attempt at escape before he was fatally stabbed by Michael Mingoes who was part of a Manchester hit team.
Four of the nine murderers were handed life sentences after they were convicted earlier this month unanimously for Michael's murder at Nottingham Crown Court.
Carla McGuire, of Wilford Crescent West, The Meadows, lived with son Michael McGuire who ran a drugs line from the home address.
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