His work against the death penalty has led him to represent criminals such as: Myra Hindley, Mary Bell, Maxine Carr, various IRA prisoners, and Abu Hamza.
[citation needed] Fitzgerald went on to study at Corpus Christi College, Oxford where he read Literae Humaniores (Classics), and graduated with a Congratulatory First.
Following this, he resumed his legal career with a one-year pupillage and he studied at the University of Cambridge leaving with a Master of Philosophy degree.
[6] At the age of 27, Fitzgerald was a barrister practising at Dr Johnson's Buildings, Temple, London, which included Helena Kennedy, and Geoffrey Robertson.
"[2] His clients have included Myra Hindley, the Moors murderer; Mary Bell, a child killer; Maxine Carr; Jon Venables, one of James Bulger's killers various IRA prisoners, including Róisín McAliskey; and Abu Hamza, a controversial Muslim cleric.
[13][14] On 25 September 2005, Fitzgerald became the "Human Rights Silk of the Year" at the Chambers and Partners Bar Awards.
[8] In June 2008, Fitzgerald was made a Commander of the Order of the British Empire in the Queen's Birthday Honours list 2008.