The security firm employs about 530,000 employees across 85 countries, providing guarding to embassies, prisons and justice services, sports stadiums and music events.
GardaWorld adviser stand to make up to £312m in fees if the Canadian firm successfully clinches shareholder’ support for the hostile takeover.
Last week, the takeover by GardaWorld went sour, after the Canadian company turned directly to shareholders, making a 190p per share offer.