Premium-rate phone regulator Icstis has announced the measures it will take in the wake of the TV quiz shows row.
Chairman Sir Alistair Graham acknowledged that public trust in premium rate phone-ins had been damaged. He said a licensing regime for all premium rate service providers would be introduced within three months.
Icstis said it would refer evidence of a criminal offence to police if it found any. The body is writing to all broadcasters confirming their commitment to carry out reviews. Sir Alistair said there was no evidence of any great "cover-up".
The Icstis chair said responsibility "did not just rest with us".
He said programme-makers and broadcasters all had a part to play. Sir Alistair promised "systematic monitoring by Icstis to ensure these services are being run as they should". Rules for premium-rate phone lines would be published, he added.
Meanwhile, Five became the latest broadcaster to suspend all its programming involving premium rate telephone services following problems with its daily quiz show Brainteaser.
Endemol UK, part of the giant production house which also makes Big Brother, alerted Five to "issues" concerning Brainteaser.
The decision is the latest in the industry, which has already seen ITV remove all premium-rate competitions from broadcast while undergoing an independent audit.
Five's chief executive Jane Lighting said: "We are shocked and disappointed and wish to apologise unreservedly to our viewers. The production company involved has failed to meet the high standards we demand of our suppliers."
The suspension will affect Quiz Call on Five and Five US, and competitions in and around programming.
