The clip was brought to HSBC's attention by the Sun.
Six British bank staff members have been sacked after filming themselves staging a mock Isis-style execution during a team-building day out.
The HSBC workers were dressed in overalls and balaclavas at a go-karting centre when they staged a beheading scene, the Sun reported.
Footage posted online showed five of them
laughing as a colleague in an orange jumpsuit, named as Saf Ahmed, knelt at their feet.
One clutched a coat hanger as a fake knife while another held Ahmed.
A worker apparently shouted "Allahu Akbar", a phrase often heard from Isis (Islamic State) in videos of them murdering hostages, before one was heard whooping.
