It is according to something called the Online Radio Awards. Radio Soho does it old school, letting smart and independent jocks choose the music. 

"The station, which broadcasts 24 hours a day, seven days a week, counts restaurant critic William Sitwell, Simpsons voice actor Harry Shearer and veteran DJs Gary Crowley and Norman Jay among its presenters. It beat stations in Africa, America and the Middle East to win the award.

"Presenter and music journalist Pete Paphides said: “It’s my best-case scenario of what a radio station should be — no playlist, just a load of music fans left to their own devices. It’s the only radio station that looks like a radio station from my childhood dreams.” 

Online London station Soho Radio named best in the world

Radio Soho