Detective Chief Superintendent Gordon Briggs, is overseeing the inquiries into phone hacking, corrupt payments and other privacy breaches.
Speaking outside court, after a senior counter-terrorism detective was found guilty of offering to leak information to the News of The World on the phone-hacking inquiry, he said.
It's totally unacceptable for a serving police officer to leak confidential information to journalists for private gain. In doing so they let down the public and they let down their hard-working honest colleagues.
To act in that way is a gross breach of public trust. I hope today's verdict demonstrates our commitment to rooting out this kind of corruption and demonstrates that corruption of this kind will not be tolerated in the Metropolitan Police Service.
More top news
The forecast is generally calm, quiet and dry as an area of cloud gives way to the south east and moves off to the near continent.
Artists have retold the stories of "imponderable brutality and evil" in works created to remember the Holocaust.
ITV News joins 85-year-old Holocaust survivor Zigi Shipper on his emotional return to the Auschwitz death camp.