Flag bearer at the opening ceremony was swimmer Mark Foster and at the closing ceremony was cyclist Chris Hoy.
Mahe Drysdale 2008 Beijing Nick Willis 2012 London
After being lit in a ceremony in Greece, the Olympic torch is carried through relay, to the country that is hosting the Olympics for the year. It is passed from runner to runner, until the final runner is revealed at the opening ceremony.
Mark Grimmette, Luge athlete.
Opening ceremony: Swimmer Mark Foster Closing ceremony: Cyclist Chris Hoy
Yes, that is the final act of the closing ceremony. After the president of the International Olympic Committee pronounces the Olympics ended the flame is extinguished and, while the Olympic anthem is played, the Olympic flag is lowered and carried horizontally from the stadium.