The debate over Palantir and NHS data is exposing a broader vulnerability: governments increasingly rely on foreign companies to operate systems they cannot easily replace.

A debate over the British government’s dependence on American technology companies is moving beyond procurement and into questions of national sovereignty. In letters published Thursday by The Guardian, Ian White and Bill Cawleyargued that the United Kingdom has become too dependent on foreign technology providers, pointing in particular to the National Health Service’s £330 million Palantir contract and the risks created when critical public systems rely on proprietary platforms controlled outside the country. 

The immediate controversy involves Palantir, the U.S. data company whose software is used across parts of the British state. Opposition has focused on privacy, the company’s political associations and its role in sensitive government work. A larger operational problem sits underneath those objections: once a public institution organizes its data and workflows around a single proprietary system, replacing that provider can become extremely difficult.