The charity, which aims to prevent the avoidable deaths, injuries and illness of customers abroad, was founded in 2016 with Cook taking a leading role in its funding.

It has since partnered with more than 20 travel brands, representing around 15 million holiday journeys, allowing the foundation to establish a "regular income" following the launch of its Safer Tourism Pledge.

In a statement, the Safer Tourism Foundation said it had "benefitted hugely from the strategic support and industry insights" of Cook chief executive Peter Fankhauser, who is one of its volunteer trustees.

"We are grateful for his contribution to our work as well as the support and commitment of so many Thomas Cook employees, who have gone above and beyond to support the charity’s work. We share in their sadness this morning and wish them all well for the future," a spokesperson said.

"What is important now is that those travellers affected by the collapse of Thomas Cook are able to enjoy what is left of their holidays before returning home safely. The Safer Tourism Foundation will continue its work with travel companies and others to help consumers have fantastic, incident-free holidays."