The tour operators plan to offer a minimum of one "make travel matter" experience on every land tour by 2023.
The initiative, which launched in 2020, contributes to the United Nations’ sustainable development goals by offering guests travel opportunities that have a positive impact on the places they visit.
The scheme is already available on 100% of the firm’s trips in Asia, with a total of 98 experiences across the globe.
Chief executive Gavin Tollman said the company is "taking every possible step" to "secure the future" of the travel industry.
