https://www.theguardian.com/technology/2020/may/07/uk-may-ditch-nhs-contact-tracing-app-for-apple-and-google-model

MPs and rights groups have warned lack of data protection could make UK app illegal

The government has left open the prospect of ditching its own contact-tracing app in favour of the “decentralised” model favoured by Apple and Google after it was revealed that a feasibility study into such a change is under way.