Before coming to the Bar, Llewellyn was a solicitor at several leading mid-tier firms in Sydney and Brisbane practising in their liability insurance and corporate recovery teams. In his varying capacities, Llewellyn’s responsibilities included the management of high-volume recovery actions and large-scale multi-party litigation.

At the Bar, Llewellyn has a broad civil practice that encompasses commercial law, personal and corporate insolvency law, class actions, competition and consumer law, professional negligence law, succession law, taxation debt recoveries, insurance and personal injury law, both Queensland and New South Wales.

Llewellyn has appeared on trials and applications in the Federal Court of Australia, the Supreme Courts of Queensland and New South Wales, all other state courts of Queensland and New South Wales, and the civil and administrative tribunals of Queensland and New South Wales. He has appeared as junior counsel on appeals to the intermediate appellate courts of Queensland and New South Wales.

On numerous occasions, Llewellyn has represented parties at mediation and in other forms of alternative dispute resolution.

Llewellyn is admitted to the High Court of Australia.
Liability is limited by a scheme under professional standards legislation.