Rolling Stones guitarist has insisted his relationship with band mate Mick Jagger is still strong.

The guitarist was reported to have upset the singer over remarks in his new autobiography, Life.

But in a new interview, Richards said Jagger had read the book and only had a few complaints about its content.

“You don't expect relationships to remain in the same groove all the time,” Richards told the Associated Press.

“It goes up and it goes down and we always end on middle ground and find our spot together.”

'Life', which charts the guitarist's childhood, as well as time in the band, was released this week.

Meanwhile Richards has said he is ready for the Rolling Stones to start working on a new album and tour.

(by Jason Gregory)