His films have grossed more than $3 billion from 42 releases worldwide. In 2011, Firth received a star on the Hollywood Walk of Fame, and was also selected as one of the Time 100. He was awarded an honorary degree from the University of Winchester in 2007, and was made a Freeman of the City of London in 2012. He has campaigned for the rights of indigenous tribal people, and is a member of Survival International. Firth has campaigned on issues of asylum seekers, refugees' rights, and the environment. He commissioned and co-authored a scientific paper on a study into the differences in brain structure between people of differing political orientations.