Sadiq Khan has said it is a “source of pride” for many that Rishi Sunak is the country’s first British-Asian prime minister.The mayor of London added that Mr Suank's appointment demonstrates that those who work hard “can achieve almost anything”."I'm really proud, I'm somebody who is a British-Asian, I'm somebody born and raised here, these sorts of times you've got to put aside party politics," Mr Khan said."I think it's a source of pride for many of us that Rishi Sunak is the prime minister of our country".