Final answer:
Parties in a British Columbia Supreme Court proceeding can appeal to the British Columbia Court of Appeal, which serves as the intermediate appellate court, and further appeal to the Supreme Court of Canada, the highest appellate body in the country.
Step-by-step explanation:
The parties to a proceeding in British Columbia Supreme Court can appeal the decision to the British Columbia Court of Appeal. The information provided on the Privy Council historically being the highest court of appeal for Canada showcases that appellate courts have the role of reviewing decisions from lower courts. In modern practice, however, the British Columbia Court of Appeal serves as the intermediate appellate court for matters arising out of the British Columbia Supreme Court, with further appeal available to the Supreme Court of Canada, which is the country's highest court of appeal and has both original and appellate jurisdiction. Appellate jurisdiction allows courts like the British Columbia Court of Appeal and the Supreme Court of Canada to decide the remedy and resolution of a case on appeal. The selection of cases for further appeal to the Supreme Court of Canada typically depends on significant legal questions or constitutional matters, as outlined by the use of writs of certiorari.