This Practice Note is a past looking tracker that records the progress of UK legislation (including Acts and Statutory Instruments in force), published judgments of the Supreme Court and Court of Appeal, and closed consultations, calls for evidence and inquiries in the field of commercial law in the UK during 2026. For commercial developments tracked previously, see: Commercial tracker 2025 [Archived], Commercial tracker 2024 [Archived], Commercial tracker 2023 [Archived] and Commercial tracker 2022 [Archived]. This Practice Note is intended to work alongside and compliment Practice Note: Commercial—horizon scanner, which tracks the progress of future developments, including Bills and Statutory Instruments in progress. When a date has passed within this Horizon Scanner, it is moved to this Practice Note for posterity. This Commercial tracker comprises the following sections: • Legislation: ◦ Acts in force ◦ Statutory instruments in force • Cases: ◦ Supreme Court ◦ Court of Appeal • Other key developments This tracker does not cover developments in the EU, for EU commercial legislative and regulatory developments, see: Trackers (EU Law)—overview. Legislation Legislation