Mark O'Callaghan BA (Oxon), LLM

Membership Status: Barrister - Full Member

General Information

Mark joined Clerksroom in 2017 having built a following as a sole practitioner over a number of years. His career at the Bar began with a common law pupillage in Temple followed by tenancy at a then leading Manchester set. His work is predominantly in personal injury and related fields covering public and employers’ liability, holiday claims, and road traffic including cases in which allegations of fraud have been intimated. He has a wealth of experience in low speed impact dating to the aftermath of Kearsley and Casey. He is happy to consider instructions on a conditional fee basis. Civil costs experience includes CCMCs, provisional assessments and detailed assessments.

Mark also undertakes family law work. Here he welcomes instructions from direct public access clients as well as from solicitors. In proceedings for financial relief on divorce he appears at FDAs, FDRs and final hearings. Children Act work is predominantly in the private law sphere but Mark does have some experience of public law matters and wardship.

Mark has completed a Masters degree in medical and healthcare law gaining a distinction at Liverpool University. He is keen to take instructions in these areas. He has attended a short course at Sheffield University on Coronial Law and Inquests.

Based in Manchester, Mark’s practice regularly takes him much further afield. He is happy to travel when required.

Away from work Mark is an accomplished runner, breaking the three-hour barrier in the 2017 London Marathon. He enjoys classical music concerts wherever and whenever possible.

Professional Memberships



“Firstly I need to say how appreciative I am for your help on this case. Thank you for the way you handled the Defendant's impromptu submissions and for persuading the Court to allow you to come back to me to send the further documents. I am very happy with everything. Thank you.

Lauretta Matthias Matt Rowland Solicitors

"I just wanted to drop you a line and thank you so much for your very kind assistance and accepting instructions at such short notice for the hearing. You have been so approachable, helpful, professional and obtained the outcome we wanted. Thank you so much. I will not hesitate to use your services again.”

Martin Armitage Minster Law

Mark O'Callaghan

phone01823 247 247

Qualified in 2001