What's going on with the UK's tracing app?published at 16:45 British Summer Time 18 June 2020
Today's press briefing is due to start in roughly 15 minutes - its start is being slightly delayed to avoid a clash with a commemorative Red Arrows fly past.
Health Secretary Matt Hancock and test and trace lead Dido Harding are likely to face some tough questions about a further delay to a proposed phone app.
Prime Minister Boris Johnson first promised the "world beating" app would be rolled out on 1 June, but it's still being tested in just one area of the UK - the Isle of Wight.
And today came news of a major U-turn - the UK is ditching the way its current app works and shifting to a model based on technology provided by Apple and Google.
This means epidemiologists will have access to less data. And the app won't be ready until the autumn - when it may only be able to "track" but not "trace" new cases.