Sydney barrister Charles Waterstreet has been banned from practice after the NSW Bar Association found the undischarged bankrupt had failed to show he was a "fit and proper person" to hold a practising certificate.

On June 27, the association's governing body, the Bar Council, resolved to cancel Mr Waterstreet's practising certificate.

Charles Waterstreet has been banned from practice. Credit:Jessica Hromas

The decision came weeks after it exercised urgent powers to suspend him temporarily from practice over a complaint about his conduct. The suspension took effect at midnight on June 14.

The criminal barrister had launched NSW Supreme Court proceedings against the association in a bid to overturn his suspension. He discontinued the case on July 5 after his practising certificate was cancelled.