As of June 2011, it was reported to have six officers working for it. According to a report in the London Evening Standard, Operation Tuleta was at that time a "scoping exercise" prior to a possible full investigation.
On 29 July 2011, Channel 4 News reported a statement from the Metropolitan Police: "Some aspects of this operation will move forward to a formal investigation. There will be a new team reporting to DAC Sue Akers". This followed a statement given to Channel 4 News by former army intelligence corporal Ian Hurst (aka Martin Ingram): "Police officers working for Operation Tuleta have informed me that they have identified information of evidential value in regard to my family's computer being illegally accessed over a sustained period of 2006. The decision by the Metropolitan Police to proceed to a full criminal investigation was conveyed to me this week by Tuleta police officers".
At 12.30 on 9 Sept 2015 the CPS dropped all charges - Ian Hurst is "proven to be an unreliable and NOT credible witness".
On 24 November 2011, a 52-year-old man was arrested in Milton Keynes "on suspicion of Computer Misuse Act offences". He was the first person arrested under Operation Tuleta and was subsequently released on police bail.
In February 2012, during evidence to the Leveson Inquiry, Deputy Assistant Commissioner Akers mentioned the existence of Operation Kalmyk, a new investigation related to Operation Tuleta. She also said that Operation Tuleta had about 20 police officers, who were looking into 57 claims of "data intrusion" on behalf of journalists. She added that they were examining 4 terabytes of data.
On 24 February 2012, it was announced that two men were arrested for hacking. On 5 April 2012, it was revealed in the Press that one of these two men was Steve Hayes, at the time owner of London Wasps Rugby Club and Wycombe Wanderers Football Club. He was arrested on suspicion of offences under the Computer Misuse Act 1990 and the Regulation of Investigatory Powers Act 2000. They were taken to London police stations and later bailed to return in June and July 2012 pending further enquiries. These arrests were not directly linked to any news organisation or the activities of journalists.
On 13 July 2012, it was announced that, following the arrest of a 55-year-old man in Cardiff, the number of arrests under Operation Tuleta had risen to six.
A seventh person, believed to be a Sun journalist, was arrested in North London on 19 July. An eighth person, reported to be the Sun chief foreign correspondent Nick Parker, was arrested by appointment, and released on bail on the 30 July 2012. A ninth person, a 37-year-old Sun journalist, was arrested on 31 July.
In all, 18 people have been arrested in relation to Operation Tuleta. The details of the remaining five people are somewhat vague, but the 18th person was a 45-year-old woman arrested on 8 November 2012. Arrests on 18th Sept 2013 reached 21 with a 58-year-old ex private detective being detained by Thames Valley Police. Ben Ashford of "The Sun" first to be named over Op Tuleta. Steven A McIntyre ex police detective identified as the 21st arrested person.
- Blue chip hacking scandal
- Operation Weeting
- Operation Elveden
- Operation Rubicon
- Operation Motorman (ICO investigation)
- Metropolitan police role in phone hacking scandal
- News media phone hacking scandal
- Phone hacking scandal reference lists
- Richard Horton (blogger)
- "Scotland Yard starts new team to look into hacking". London Evening Standard. June 10, 2011. Retrieved 2011-07-13.
- Justin Davenport (6 Jul 2011). "Anyone identified of wrongdoing will face courts, warns Met chief". Evening Standard. Retrieved 2011-07-14.
- "An overlooked Panorama scoop as a British soldier breaks cover". The Guardian. March 16, 2011. Retrieved 2011-07-30.
- "Hacking Scandal - Met Launches New Probe". Channel 4 News. July 29, 2011. Retrieved 2011-07-29.
- "First person arrested by Operation Tuleta hacking inquiry". BBC News online. 24 November 2011. Retrieved 24 November 2011.
- "Leveson inquiry: Sue Akers, Paul Dacre, Dan Wootton - live". The Guardian. 2012-02-06.
- "Rugby boss arrested over hacking in dawn swoop". The Evening Standard. 2012-04-05.
- Josh Halliday (2012-07-13). "Operation Tuleta makes sixth arrest in computer hacking investigation". The Guardian. Retrieved 2012-07-13.
- Josh Halliday and Mark Sweney (2012-07-19). "Operation Tuleta: Sun journalist arrested in hacking investigation". The Guardian. Retrieved 2012-07-19.
- "Phone-hacking police release Sun journalist on bail". BBC News. 30 July 2012. Retrieved 30 July 2012.
- Josh Halliday (2012-07-31). "Sun journalist arrested in Operation Tuleta investigation into stolen phones". Retrieved 2012-09-09.
- "Man arrested and bailed in computer hacking probe". BBC News. 2012-08-23. Retrieved 2012-09-09.
- "Journalist arrested in computer hacking probe". BBC News. 2012-08-29. Retrieved 2012-09-09.
- Ian Burrell (2012-08-29). "Former Times reporter Patrick Foster held over hacking". The Independent. Retrieved 2012-09-09.
- Kelly Fiveash (2012-09-07). "Phone hack cops nick journo over data taken from pinched mobes". Retrieved 2012-09-09.
- Josh Halliday (2012-09-07). "Journalist arrested by Metropolitan police in privacy probe". Retrieved 2012-09-09.
- BBC News (2012-11-08). "Operation Tuleta: Woman arrested in privacy breach probe". Retrieved 2012-01-11.