The case has also prompted fresh warnings about the risk of violent psychosis among teenagers who smoke extra-strength cannabis. Campbell used the drug for several years before the murder.
Experts also warned that a growing number of teenage boys are committing sexual offences because of violent and graphic material they are viewing online.
Campbell’s YouTube channel did not violate the platform’s user rules and was not running any adverts.
But the company decided to remove following Campbell’s conviction on Friday, which prompted widespread publicity regarding the channel, and the graphic nature of his attack on Alesha.
It is understood that YouTube thought it important to remove the channel to respect and protect the privacy of Alesha and her family.
A spokesman for the company said: “Given the recent conviction, we’ve removed the channel from YouTube.
“Our hearts go out to the victim and her family, and we wish them peace in this incredibly difficult time.”