Jon is recommended in clinical negligence by the Legal 500, and in clinical negligence and professional discipline by Chambers & Partners:

Jonathan Holl-Allen, whose "calm and methodical approach lends authority to his advocacy." Solicitors believe that "his judgement in presenting cases both orally and in writing is excellent." Chambers and Partners 2010

Jonathan Holl-Allen is "a fine courtroom performer" who gets good results. Chambers and Partners 2010

'Jonathan Holl-Allen is “more than able to deal with most things thrown at him - very astute, he picks up on the issues and presents them to the court very well.”' Chambers & Partners 2009

'A barrister on the rise, Jonathan Holl-Allen is admired by solicitors as an “outstanding, well-prepared and thorough advocate who is reasoned in his analysis and able to wipe the floor with opponents in court.”' Chambers & Partners 2009

Mental Health experience  Jon acted as counsel in the Georgina Robinson inquiry in Torbay with Nicola Davies Q.C. This looked into death of occupational therapist at hands of paranoid schizophrenic patient. The Inquiry involved a wholesale review of the mental health history of the offender which involved his care in hospital, Broadmoor and in the community. The inquiry examined the provisions of, and procedures relating to, Mental Health Act 1983 in some detail.
He has also been instructed in clinical negligence cases involving the care of psychiatric patients. Including a High Court case involving a patient detained in hospital under the MHA who escaped and was severely injured in a road traffic accident nearby and a case in which a care assistant was killed by a paranoid schizophrenic patient in a MIND hostel.

Inquiries  Junior counsel in the Georgina Robinson Inquiry
Advisory work for the Christopher Edwards Inquiry (mental health)

Clinical/dental negligence  Considerable experience, including both clinical negligence and dental trials.
Experience of both Claimant and Defendant work.
Have acted for HAs/Trusts as junior counsel in high value claims.

Parry v North West Surrey Health Authority   [2000] TLR 2 (whether interest on interim payments to be taken into account in final assessment of damages)