He was called to the bar at the Middle Temple in 1989 and practised clinical negligence and personal injury. In 2004, he joined Kings Chambers in Manchester, where he was head of chambers from 2017 to 2020.[3][4]
From 2012 to 2020, he was a chair of the Bar Tribunal and Adjudication Service, determining disciplinary issues for practising barristers. He was appointed a recorder in 2009, took silk in 2012. He was appointed a deputy High Court judge in 2017.[1][3][2]
On 1 October 2020, Poole was appointed a judge of the High Court, replacing Sir Jonathan Baker who was promoted to the Court of Appeal, and he was assigned to the Family Division.[5][6] He received the customary knighthood in 2022. Since 2021, he has been the Family Division liaison judge for the North Eastern Circuit.[1]