Mrs. Lorna Harris obtained her Law Degree (with honors) from Edinburgh University (Scotland, the UK) in 1971.  After qualification as a solicitor in Scotland, England, and Wales she pursued her career as a prosecutor first at the Procurator Fiscal Service and then in various prosecuting agencies in England, afterwards joining the Serious Fraud Office at its inception.  Mrs. Harris was employed at the SFO throughout the next decade as a Case Controller, being involved in investigating and prosecuting cases of serious and complex fraud.  Later on, Mrs. Harris consecutively headed United Kingdom Central Authority in the Home Office and Civil Recovery Unit in the Crown Office in Edinburgh, being responsible for operation of mutual legal assistance in criminal matters for the UK, as well as for extradition issues and assets recovery.

After her retirement from government service in 2008, Mrs. Harris was employed as a consultant for prominent international organizations (particularly, for the IMF, the UN, and the Council of Europe), being engaged in work on criminal assets recovery and international cooperation.  She also worked with governments of several countries (Malaysia, Mauritius, Guatemala) to assist them in developing appropriate legislation for these purposes.

Mrs. Harris also co-authored a textbook on the subject of mutual legal assistance in the UK in 2000.  As a part of recognition of her work in assets recovery and international cooperation, Mrs. Harris was awarded the Commander of the Order of the British Empire (CBE).