He is being held in prison until he is sentenced in October.
Kibble was previously given a suspended sentence in 2022 for offences of possessing indecent sexual photos of children.
He was also made the subject of a Sexual Harm Prevention Order (SHPO) which banned him deleting his internet history and from sending messages to children.
By virtue of his recent online activity, Kibble was in breach of that SHPO.
The court heard that his most recent offending involved online conversations with who he believed to be a 15-year-old girl about her having sex with grown men.
Recorder Michael Hillman, sitting at Woolwich Crown Court on Friday, September 5, described it as a “serious case”.
He said Kibble faces to possibility of a substantial custodial sentence when he is dealt with later this year.
