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The Role of The Crown Prosecution Service

The Crown Prosecution Service is the government department responsible for prosecuting criminal cases investigated by the police in England and Wales.

As the principal prosecuting authority in England and Wales, we are responsible for:

  • advising the police on cases for possible prosecution
  • reviewing cases submitted by the police
  • determining any charges in more serious or complex cases
  • preparing cases for court
  • presenting cases at court

Find out more about the role of the Crown Prosecution Service

Woman convicted of acid attack on former friend


Mary Konye, 21, was convicted today at Snaresbrook Crown Court for applying a corrosive fluid with intent, contrary to the Offences Against the Person Act 1861. The attack occurred in Dagenham on 30 December 2012 and the victim, Naomi Oni, was left with life-altering injuries.

Baljit Ubhey, CPS London Chief Crown Prosecutor, said: "The use of acid as a weapon is cruel and horrifying. It can have a devastating effect on victims and can cause long term pain and disfigurement as well as emotional and psychological harm.

"The attack left Naomi with shocking injuries, including deep chemical burns to her face, neck, forearm and thigh.

"This was an extremely brutal attack committed as Naomi made her way home from work. Mary Konye disguised herself in a niqab and followed the victim from her workplace in Stratford to her home in Dagenham. As she got off a bus near her home the defendant threw sulphuric acid over her, then fled the scene.

"Mary Konye and the victim used to be friends and they had discussed the high profile case of Katie Piper who was the victim of an acid attack in 2008, and how Naomi had been particularly moved and upset by her story. Konye exploited this fear to cause maximum harm and her defence of suggesting that the victim would have thrown acid on herself was contemptible.

"Konye has now been brought to justice and must face the full consequences of her appalling actions.

"I would to like praise Naomi's courage and dignity in giving evidence during this trial."


Notes to Editors

  1. For media enquiries call the CPS Press Office on 020 3357 0906; Out of Hours Pager 07699 781 926
  2. The CPS consists of 13 Areas in total, each headed by a Chief Crown Prosecutor (CCP). In addition, there are four national casework divisions: Central Fraud, Welfare Rural & Health, Special Crime & Counter Terrorism and Organised Crime. A 'virtual' 14th Area is CPS Direct which provides charging decisions to all police forces and other investigators across England and Wales - it operates twenty-four hours, seven days a week, 365 days a year.
  3. At 31 March 2013 we employed a workforce of approximately 6840 staff (full time equivalent), including around 2350 prosecutors and 4110 caseworkers and administrators. Further information can be found on our website:
  4. The CPS, together with ACPO and media representatives, has developed a Protocol for the release of prosecution material to the media. This sets out the type of prosecution material that will normally be released, or considered for release, together with the factors we will take into account when considering requests. Read the Protocol for the release of prosecution material to the media.