Unfortunately the cop shows himself in a bad light too. He was fazed by the camera, and lost his confidence when the arrogant self-gratification artist kept on badgering him to quote act and section. The cop had a power of arrest under these circumstances, and "Danny" commits several offences. It is indeed a shame the cop bottled it, 'cos peanuts like Danny don't listen to sense even when it's being patiently explained by a custody officer, thereby extending their time in custody!
For the record, when the cyclist refused to accept the ticket, the cop should have reported him for summons, at which point he is obliged to provide sufficient details about himself to allow the service of a summons. As he also appeared not to be prepared to provide those details, the cop can arrest him in order to verify his identity/address or secure his attendance at a court.
Can't project how I would have reacted in the circumstances, but show that piece of film to a magistrate and behave like that in court and you aren't likely to make many friends.