On 1 November 2001 the Bar Council of the New South Wales Bar Association, resolved, pursuant to sec 38FC of the Legal Profession Act 1987, to cancel the practising certificate of Gregory John Willis, effective from midnight on Friday, 16 November to enable the proper arrangements of the barrister's affairs.

On 7 August 2003 the Law Society of New South Wales issued Gregory John Willis with a practising certificate as a solicitor and barrister.