There are at least six artists and bands who have performed with the name "Passenger". The following order is loosely based on the last.fm statistics.
These are videos from concerts where Passenger played, so they may be of other bands that played the concert as well.
Ed Sheeran / Passenger Nov 19, 2012 Lille, Hauts-de-France, France Added by Maite González
Ed Sheeran / Foy Vance / Passenger Oct 14, 2012 London, England, United Kingdom Added by Maite González
Ed Sheeran / Passenger / Nina Nesbitt Mar 12, 2012 Amsterdam, North Holland, Netherlands Added by Maite González
Ed Sheeran / Passenger Mar 11, 2012 Brussels, Brussels Capital, Belgium Added by Maite González