According to an informant, security officers at Brixton Academy often accepted bribes to let people without tickets to shows.
After a crush at the venue in December, Rebecca Ikumelo, 33, and security guard Gaby Hutchinson, 23, passed away in the hospital.
Witnesses reported seeing hundreds of people fighting for tickets to the Asake concert.
He also reported that bribing guards for tickets was not limited to Brixton Academy, but also happened at several other venues and festivals where he had worked.
“You can train someone to the max, but when that happens in front of you, you actually stop… you freeze.”