United Kingdom, Sept. 5 -- Idris Elba doesn't "have the courage" to enter politics.

The 52-year-old actor was recently tipped as a possible contender to run for London Mayor at the next election but the Luther star is adamant he doesn't have what it takes to swap Hollywood for City Hall.

Speaking to journalists at the Venice Film Festival in Italy, he explained: "I think you have to give it to people that enter politics - the life cycle and going on an educative curve to become a politician means that you have to adopt that courage really early because then you're faced with these impossible predicaments.

"It's about your judgement then; it's about what you know, what you've learned, what you've lived through, and your courage. So I le...