Remember the contact-tracing app trialled last month on the Isle of Wight? The technology - part of the promised “world-beating” system for identifying people in England who have been in close contact with those with coronavirus - should be in place by the end of the month, says Business Minister Nadhim Zahawi. Last week, new test and trace systems were launched in England and Scotland. Northern Ireland already had a contact tracing programme up and running and Wales began its scheme on Monday.

But the need for further trials meant the app could not be included in the launch, with the government saying it hoped to have it operational across England "in the coming weeks". Now Mr Zahawi says it will "be running as soon as we think it is robust". However, the Guardian quotes the chief operating officer of the NHS test and trace scheme saying the system will initially be imperfect and "world-class" only by the autumn. The Department of Health says the new test and trace service is already up and running and will save lives, thanks to the recruitment of more than 25,000 contact tracers.

Face coverings should be compulsory in all places where social distancing is not possible, not just on public transport, says the doctors' union. The comments from the British Medical Association (BMA) come after the government said passengers in England must wear a face covering from 15 June. They are recommended in Scotland and Northern Ireland in places where social distancing is more difficult, while the Welsh government says it is a personal choice. However, BMA council chair Dr Chaand Nagpaul said: "These important measures should not be restricted to public transport but [apply] to all areas where social distancing is not always possible. The risk will be much less if the public adopts this now, not mid-June."

Meanwhile, the British Dental Association (BDA) is warning there will be no return to "business as usual" for dentistry in England. Practices were told last week that they could reopen from Monday, with appropriate safety measures in place, but a poll suggests 63% will not hit that date. BDA chair Mick Armstrong says patients can expect only a "skeleton service", with the survey indicating a third of practices lack the protective equipment they need.

British drug maker AstraZeneca says new deals will enable it to supply two billion doses of a potential virus vaccine being developed with scientists at Oxford University. It has agreed to supply half of the doses to low and middle-income countries. Read more about the plans. Meanwhile, authors of a study have retracted an influential article suggesting anti-malaria drug hydroxychloroquine increases the risk of death in coronavirus patients. The drug was touted by US President Donald Trump as helping to ward off Covid-19. But three of its authors s ay they can no longer vouch for the research's veracity because a healthcare firm that provided the dataset behind it will not allow an independent review.

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While the tabloids lead on the latest developments in the disappearance of toddler Madeleine McCann, in Portugal in 2007, the Daily Telegraph splashes on the ruling that anyone travelling on public transport in England must wear a face mask from 15 June. The decision will increase speculation the 2m social-distancing rule could soon be relaxed, the paper adds. The Times notes that the ruling on face coverings comes two months after Transport Secretary Grant Shapps dismissed the idea as "counter-productive". No agreement has been reached for Scotland and Wales to adopt the same rule, the Metro points out. Passengers in Northern Ireland have been asked to consider wearing them. Read the review.

From elsewhere

The Podlitical team is joined by Ashitha Nagesh to explore why black and minority ethnic Britons are being hit so hard in the pandemic, while the Coronavirus Newscast discusses the new ruling around wearing face coverings on public transport in England.

In light of the protests over the death of George Floyd in Minneapolis police custody, the BBC's Clive Myrie examines the USA's history with police brutality. Plus, we have five pieces of context to help you understand the demonstrations. Meanwhile, the brother of a man caught up in the Windrush scandal tells us how he turned the story into the new BBC One drama, Sitting in Limbo. Also, members of the Association of Photographers have been selecting the photographs that changed their careers. Check out a selection of them. And, as it's Friday, why not take on our quiz of the week's news?