Terry obtained his Law Degree from the University of British Columbia in 1968 and was called to the Bar of British Columbia in 1969. In 1971 he co-founded the firm of Norton Stewart (Vancouver) and formed the firm of Stewart & Winch LLP with Charlie Winch in 1997.

Terry practices in the areas of Business Law (Corporate & Commercial Law); Commercial Real Estate and Wills, Estate Planning and Probate.

Providing extensive legal services to many domestic clients with business interests in Canada and the United States, Terry is known as a "businessman's lawyer", applying practical advice and excellent negotiating skills to an extensive knowledge of the law in a given area.

A number of Terry's clients are based in Europe with business interests around the world Terry has traveled extensively to many foreign jurisdictions on client business (primarily Europe, Central America and the United States).

The following constitutes representative clients to whom Terry has provided legal services:

• Societies, Crown Corporations and Ministries of the British Columbia Provincial Government, primarily involved in the areas of tourism events, land assembly and railroads;
• a Canadian real estate corporation having extensive commercial/retail holdings across Canada;
• British Columbia legal advisor to an international airline;
• British Columbia Native Indian Band;
• a UK-based technology company involved in major civil litigation respecting United Kingdom, Canadian and U.S. participants;
• a major Vancouver-based bakery;
  a Vancouver yacht club;
• a Vancouver-based bridge construction company;
• a major Vancouver-based international engineering firm;
• Canadian banks, savings unions and trust companies;
  local retail businesses;
• corporations involved in the British Columbia fishing industry;
  corporations and personalities involved in the advertising, radio, television and movie industries; and
• professional corporations (medical, dental, accounting and legal)

Terry is a member of the Law Society of British Columbia and has been extensively involved in a director's capacity with numerous artistic companies, not-for-profit organizations and local Business Associations (including director of Ballet British Columbia and Music in the Morning).
Terry is also an honorary member and legal advisor to a local chapter of Rotary International and acts as legal advisor to a number of other charitable organizations and foundations.