A separate probe by Banijay UK, a production company, found informal concerns flagged about Brand during his time at Channel 4 were “not properly escalated”.
An investigation said managers had been alerted to allegations he asked staff to get the phone numbers of audience members, although no formal complaints were made.
There were also claims his behaviour had made female crew members feel intimidated and uncomfortable.
The BBC is investigating complaints about Brand’s alleged behaviour during his time working for the corporation.
Bosses at the broadcaster ordered a thorough review to establish what was known about his alleged actions amid claims that at least one senior executive brushed complaints under the carpet.
It was claimed last year that Brand exposed himself to a woman before going on air before laughing about it during his BBC radio show.
The alleged victim said that she was stunned after the encounter in Los Angeles in June 2008 and that shortly after on Radio 2 he laughed with his co-presenter who said Brand “showed his w—- to a lady”.
Brand has since been axed by a number of agents and publishers as well as having his YouTube channel demonetised.
He has continued to post to Rumble, which “emphatically” refused demands from MPs to suspend his ability to make money.
Brand, who has insisted that all of his sexual relationships have been consensual, was contacted for comment.
Responding to the accusations made against him in September 2023, he said they were “astonishing”, “rather baroque” and part of a “serious and concerted agenda to silence him”.