It began with the discovery that thousands of people had been victims of tabloid journalists accessing their mobile phones in pursuit of stories.
Operation Weeting, the investigation into phone hacking at the former News of the World headquarters, cost Scotland Yard £23 million.
Now the Crown Prosecution has ended the investigation, charges of Corporate Liability against Rupert Murdoch's media empire and former journalists at The Mirror will not be brought.
ITV News Correspondent Paul Davies reports:
Former Number 10 spin doctor Andy Coulson has been ordered to pay £150,000 towards the costs of last year's £1.7 million hacking trial.
Coulson, 47, was jailed for 18 months after being found guilty of involvement in the hacking of phones while editor of the now-defunct News of the World.
The prosecution had wanted the father-of-three to pay £750,000, but today Mr Justice Saunders said he should pay £150,000 over three years.
Former News of the World deputy editor Neil Wallis has been cleared at the Old Bailey of being part of the phone hacking plot at the now defunct paper.
Andy Coulson's former deputy broke down in tears as he was cleared by a jury.
Mr Wallis, Coulson's right-hand man between 2003 and 2007, was accused of being part of the scandal which led to the Sunday tabloid shutting down in July 2011.
The jury deliberated for four days before finding 64-year-old Mr Wallis, of Chiswick, west London, not guilty of conspiring to hack phones.
Former News of the World features editor Jules Stenson has admitted phone hacking at a hearing at the Old Bailey today.
Former Sunday Mirror journalist Graham Johnson has been charged with phone hacking, the Crown Prosecution Service has confirmed.
A file was received from the Metropolitan Police in May 2014 and the CPS has today authorised the police to summons Graham Johnson, a former Sunday Mirror journalist, to be charged with an offence of intercepting communications without legal authority, namely mobile phone voicemail messages.
Graham Johnson will appear before Westminster Magistrates’ Court on 6th November 2014.
Trinity Mirror has admitted for the first time that some of its journalists were involved in phone hacking.
The publishing group which publishes the Daily Mirror, Sunday Mirror and Sunday People has agreed to pay compensation to four celebrities who had sued over hacking of their voicemails.
ITV News Correspondent Paul Davies reports
Actor Shane Richie and former England manager Sven Goran Eriksson are among ten people Trinity Mirror group has agreed to compensate for phone hacking claims, the newspaper publisher has said.
Richie himself was among four people the Daily Mirror owner promised to compensate after admitting intercepting voicemails "many years" ago, while his wife and agent have also settlements over hacking claims.
Also on the list were fellow soap actors Lucy Benjamin and Shobna Gulati and TV presenter Alan Yentob.
The group also said it had already agreed settlements with six other people named in full below, including former England manager Sven Goran Eriksson, Doctor Who actor Christopher Eccleston and Abbie Gibson, the former nanny of David and Victoria Beckham.
- Sven Goran Eriksson (football manager)
- Christopher Eccleston (actor)
- Abbie Gibson (Beckham family's former nanny)
- Christie Roche (wife of Shane Richie)
- Phil Dale (Shane Richie's agent)
- Garry Flitcroft (ex-footballer)
Newspaper publisher Trinity Mirror has admitted for the first time that its journalists hacked phones after agreeing to compensate four people.
In a statement, the publisher of the Daily Mirror and other titles said it admitted liability for allegations that it intercepted the voicemails of four unnamed individuals "many years" ago, adding that it had apologised and had agreed to pay compensation.
The group also confirmed six other claims had already been settled for agreed sums.
George Clooney has said he will get behind the camera to direct a film about the phone hacking scandal.
The Hollywood star, who has previously directed movies including this year's Monuments Men, will bring journalist Nick Davies' book Hack Attack to the big screen.
The 53-year-old, who is the son of US journalist Nick Clooney, said he is delighted to be involved in the film, which will focus on the scandal that engulfed Rupert Murdoch's news empire.
He said: "This has all the elements - lying, corruption, blackmail - at the highest levels of government by the biggest newspaper in London,
"And the fact that it's true is the best part. Nick is a brave and stubborn reporter and we consider it an honour to put his book to film."
Mr Davies' book was the product of six years of investigation at News Corporation and News International.
Coulson's co-defendants Rebekah Brooks and managing editor Stuart Kuttner denied any wrongdoing and were cleared of all charges.
Hacking victims included the family of murdered schoolgirl Milly Dowler, sports stars, a whole host of celebrities and members of the Royal Family.
Former Conservative MP Louise Mensch, who was a member of the parliamentary committee investigating phone hacking, said journalists told her that the practice was "widespread" within the industry.
Ms Mensch said: "I remember during the parliamentary inquiry into hacking, I was very clear, journalists were coming to me all the time saying this was a widespread practice in Fleet Street, and the further we get into it the more true that becomes."
Earlier, it was revealed that former Daily Mirror editor Piers Morgan was questioned under caution last December about phone hacking but was not arrested.