Williamson Magor & Company Limited, founded in 1949, began as a manufacturing and agency business with diverse interests in tea, engineering, jute, and reprographic items. Today, it functions mainly as an investment and group shareholding entity.

The company has restructured over the years, shedding various manufacturing divisions and tea estates to focus on investments and property ownership.

Originally a major tea company, Williamson Magor transferred its tea business to subsidiary companies, thus becoming a holding company for these entities.

Diversification efforts led to ventures in the power sector, though plans like the 90-MW gas-based power plant were shelved due to challenges.

The company has undergone multiple mergers and divestments, impacting its subsidiary portfolio, aligned with strategic shifts toward investment holding.