The BBC has published the Director-General's report on its use of premium rate phone services.

The report highlighted "grave mistakes" and "serious errors of judgement" in the Blue Peter phone-in scandal, criticised mistakes made during an edition of Saturday Kitchen, and acknowledged licence fee payers felt "let down" and "disappointed."

BBC Trust's chairman Sir Michael Lyons said: "The errors which occurred around the Blue Peter programme on 27 November last year were particularly serious as they resulted in children being misled to participate in a competition they had no chance of winning and in a child in the studio being involved in deceiving the audience. These grave mistakes were compounded by serious errors of judgement in not referring the matter to senior management."

"The case of Saturday Kitchen has also revealed flaws which, in the view of the Trust, resulted in viewers being misled into believing that they were calling a live programme," Lyons added. The cookery show was had asked viewers to phone a premium-rate number for the chance to appear on the following week's show, with the next show recorded immediately afterwards.

Director-General Mark Thompson said the report showed that in a number of instances the BBC had "fallen short of our high standards," and was pleased the Trust had accepted his recommendation to publish the report.

Thompson said: "I believe that the report, and the actions we intend to take as the result of its lessons, will help to restore public confidence and reassure the public how seriously we regard such breaches."

A list of the Director-General's actions, including more editorial checks and further monitoring of the use of premium rate services in BBC productions, can be read here.

The Trust is also to conduct its own review, which will be led by Ronald Neil, the BBC's former director of news and current affairs. Recommendations will be made in the autumn and with findings and reports from regulators Ofcom and Icstis, it will publish its conclusions shortly after.

Thompson added: "BBC viewers and listeners very much enjoy and benefit from interacting with programmes, and they do so in large numbers. The BBC does not make a profit from this activity. It is very important that when members of the public take part in such activities, they can do so with confidence. This is a challenge for the entire broadcasting industry."