Korner was instrumental in the formation of several notable British bands including The Rolling Stones and Free.

In the 1960s Korner began a media career, working initially as a show business interviewer and then on ITV’s Five O’Clock Club, a children’s TV show. Korner also wrote about blues for the music papers, and continued to maintain his own career as a blues artist, especially in Europe.

On 17 October 1967, Korner interviewed The Jimi Hendrix Experience for the BBC radio show Top Gear. Some of these tracks, including audio of Korner himself, appear on the Hendrix double-CD BBC Sessions, including Korner playing slide guitar on “(I’m Your) Hoochie Coochie Man”.

While touring Scandinavia he formed the band New Church with guitarist and singer Peter Thorup. They subsequently were one of the support bands at the Rolling Stones Free Concert in Hyde Park, London, on 5 July 1969. Jimmy Page reportedly found out about a new singer, Robert Plant, who had been jamming with Korner, who wondered why Plant had not yet been discovered. Plant and Korner were recording an album with Plant on vocals until Page had asked him to join “the New Yardbirds”, a.k.a. Led Zeppelin. Only two songs are in circulation from these recordings: “Steal Away” and “Operator”. Korner gave one of his last radio interviews to BBC Midlands on the Record Collectors Show with Mike Adams and Chris Savory.