https://tech.newstatesman.com/security/nhs-covid-19-contact-tracing-app-rollout

The NHS is in the process of rolling out an app that will trace who people have been in contact with, and alert them of the need to self-isolate if they have been in proximity to someone infected with coronavirus.

NHSX, the NHS England innovation unit, is leading the project, and development of the app is reportedly being carried out by Pivotal, a subsidiary of American software giant VMware.