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Boris Johnson said no country had a 鈥渇unctioning contact tracing app鈥� to combat coronavirus.

Sir Keir Starmer said Germany has one which has been downloaded 12 million times, but Boris Johnson said he was 鈥渃ompletely wrong鈥�.

The Labour leader asked the prime minister, where was the promised UK app, where 拢12m had been spent on the project and said that 鈥渙ther countries were 鈥渁head of us鈥�.