Ex-world champion boxer Liam Smith charged with assault

• Liam Smith, 38, is alleged to have punched a concierge worker on the floor.
• Smith appeared at Manchester Crown Court to face a charge of assault.
• The alleged incident occurred in Manchester, England.
• Smith, from Liverpool, held the WBO light-middleweight title from 2015 to 2016.
• The concierge worker reportedly sustained serious facial injuries.