Brett has been an admitted attorney since 1994, which date also saw the establishment of Bentley Attorneys.
He also founded Bentley Credit Control, a company specialising in call centre debt recovery and credit management.
He is a specialist attorney in credit law and debt recovery and presented the SA Law Society Legal Debt Recovery training seminar for attorneys from 2012 to 2019.
He has authored numerous legal articles and was awarded the Article of the year by an attorney in 2013 by De Rebus, the official SA Attorneys Journal. His articles have also been cited in court cases, including a Constitutional Court judgment.
He has done work for over 150 private and public schools across the country.