Research and analysis

Satellite-derived time and position: Blackett review

Review exploring our dependency on global navigation satellite systems (GNSS).



Many of our critical services, from telecommunications to transport, rely on global navigation satellite systems (GNSS) to operate.

This report sets out the findings of a review exploring the UK’s dependency on GNSS. It covers:

  • threats and vulnerabilities
  • sector dependencies (both current and future)
  • mitigations
  • standards and testing

It recommends a number of measures to make critical services more resilient to disruption or loss of GNSS.

Published 30 January 2018