It was billed by the prime minister as a "world-beating" system ahead of its launch in May, although we were later told it would not perform at full tilt until the autumn. Now scientists suggest the current coronavirus testing and contact tracing regime is inadequate to prevent a second wave after UK schools reopen. Education is due to restart for children in Scotland on 11 August, and across the UK in early September. Researchers say computer modelling indicates that to keep the virus in check 75% of people with symptoms must be found, with 68% of their contacts traced, or else 87% must be found and 40% of their contacts traced.

However, they say NHS Test and Trace in England is currently tracing an estimated 50% of contacts, with seemingly too low a proportion of people with symptoms being detected. Prof Chris Bonell, from the London School of Hygiene and Tropical Medicine, says: "It doesn't look good enough to me." The UK government insists plans are in place to ensure schools can fully reopen at the start of the new school year, with local officials ready to act on data to stem any rise in cases. Welsh government figures suggest 90% of close contacts are being reached there. In Northern Ireland, the figure is 98%. The Scottish government says guidance has set out "a number of specific risk-mitigation measures that will need to be introduced" including an "enhanced surveillance programme".

The circumstances are unique but it won't make the morning any less agonising for Scotland's school pupils. About 138,000 students are finding out their grades in Nationals, Highers and Advanced Higher courses, after the Covid-19 pandemic forced exams to be cancelled for the first time in history. This year's results will be based on estimates from their teachers - here's how they worked them out. Those who signed up for text or email alerts will receive their grades from 0800 onwards, while certificates will arrive in the post during the day. Our report has links to pupil advice services.

Twitter says racist behaviour has "no place" on its platform. But shadow justice secretary David Lammy says it must get faster at stamping out threats, after receiving a tweet calling him "monkey boy" and saying he would "hang from a lamppost". The black Labour MP reported a user to the Metropolitan Police on Sunday but the account wasn't suspended until Monday, after further tweets from Mr Lammy highlighting the abuse. Home Secretary Priti Patel is also pressing Twitter to take "decisive action" faster in such cases. The company says it suspended the account for violating its hateful conduct policy.

Serious foul play... violent conduct... deliberate handball to prevent a goal... coughing. Football's rules have been tweaked for an age of pandemic, with rule-makers declaring that deliberately coughing at opponents or match officials constitutes a sending off offence. It would be up to the referee to distinguish between "routine" and deliberate coughing, but the latter falls within existing rules on "using offensive, insulting or abusive language and/or gestures", the International Football Association Board says.
.

Reaction to the first day of the Eat Out to Help Out scheme makes some front pages, with the Metro wondering: "What obesity crisis?" Some customers are using the offer - in which the government covers 50% of restaurant bills on Mondays to Wednesdays throughout August - to order a double portion, it explains. "We've had our lunch, now get back to work," urges the Daily Mail's headline, as it points out how many offices remained deserted while restaurants were packed. Meanwhile, the i quotes scientific advisers saying those recently recovered from Covid-19 should be exempt from household quarantine rules, having concluded they were "much less likely to be infectious". Away from coronavirus, the Daily Telegraph and Guardian both focus on the revelation that leaked documents about trade negotiations with the US - used by Labour during the 2019 election - were stolen from the email account of the then International Trade Secretary Liam Fox. Read the review.

"It's just a Welsh guy running and shouting." Professional athlete-turned-rock star Jimmy Watkins' assessment of his latest project may be correct but it hasn't stopped it proving a social media hit. Read how - and why - he makes videos showing him shouting reviews of recommended albums as he pounds the streets of his native Llanelli. And the "richest game in football" takes place tonight, as local rivals Brentford and Fulham face off for the right to play in the English Premier League. Read our preview.

From elsewhere