It comes after the group, which also includes Explore Worldwide, Esprit Ski, Santa’s Lapland and Inntravel, moved away from traditional avoidance-based carbon offsetting towards carbon removal and rewilding.
Chief executive of Hotelplan UK, Joe Ponte, said: "We’re delighted to align ourselves with these innovative organisations, both leaders in their field.
"Protecting the planet that we and our customers so love exploring is critical, as is taking a forward-thinking approach in our carbon mitigation efforts."
