Douglas Ross quits the government as more than 35 Conservative MPs call for Dominic Cummings to go.
The PM's top aide says he "behaved reasonably" as he explains why he drove to Co Durham during lockdown.
The party's new most senior official was assistant general secretary between 1999 and 2001.
Members of the public have expressed anger after the PM's chief adviser travelled to Durham in lockdown.
The controversial former Vote Leave campaign director is the PM's most senior adviser.
Almost 15,000 rough sleepers have been in emergency accommodation since the start of the lockdown.
It is the first time since 18 March that no new deaths have been reported - a "clear sign of progress" according to the health minister.
People who have been in close contact with someone who tests positive will now be traced and told to self-isolate.
Health minister says people in Wales will be told of any relaxation of the rules in three days time.
Boris Johnson says all shops can reopen in England next month if they meet certain Covid-19 guidelines.
The National Cyber Security Centre involvement follows new US sanctions on Chinese telecoms giant.
Jonathan Edwards has the Plaid Cymru whip withdrawn, meaning he must sit as an independent.
The government could aid strategically important firms affected by the coronavirus pandemic.
Members of political parties speak of death threats, misogyny and sexual comments.
A major rethink aimed at cutting costs is under way, but some MPs fear the project will be shelved.
The PM will be questioned by the Commons' Liaison Committee for the first time since taking office.
The Chief Executive of NHS England says it is considering hiring cabin crew to train as nurses.
Travellers to France must self-isolate for 14 days, following similar measures announced by the UK.
But the transport secretary says social distancing will cut capacity to a fifth of the usual amount.
Sources say any risk to pupils is very small but any activity outside the home has risk.
Locking down the UK sooner would have made a big difference to the death rate, a scientific adviser says.
The government borrowed £62bn in April - the highest monthly figure since records began.
NHS staff and care workers from abroad are to be exempt, as Labour calls it "the right thing to do".
Ten million antibody tests will also start being rolled out next week, Health Secretary Matt Hancock says.
NHS staff will be prioritised for the blood tests, which check if someone has already had the coronavirus.
The NHS Confederation warns of "severe" consequences if the right system is not established quickly.
Ministers met to consider allowing people to visit family indoors, but have decided against it for now.
Police watchdog clears Boris Johnson over his dealings with US businesswoman Jennifer Arcuri.
A social care tax was among options discussed to cover the costs, it is understood.
The Liaison Committee has asked the prime minister to appear "well before the end of June".
First Minister Nicola Sturgeon unveils a four-phase "route map" aimed at relaxing the coronavirus restrictions.
Official figures show an estimated 282,000 more non-EU citizens came to the UK than left in 2019.
There could be a tense stand-off in the race to replace Jennie Formby as the party's general secretary.
Right to remain is extended to cover families of NHS cleaners and care workers who die with coronavirus.
Matt Hancock has said the government may review fines which people were given for breaching lockdown rules for childcare reasons.
The leader of the Scottish Tories says he would be "considering my position" if he was Dominic Cummings.
Douglas Ross on why he resigned as junior minister following Dominic Cummings' lockdown trip defence.
The prime minister responds to a question about a drive that Dominic Cummings took during lockdown.
Dominic Cummings says he used the trip to test his ability to drive to London, after experiencing loss of vision due to coronavirus.
The prime minister's chief adviser says his vision was affected by coronavirus.
What do you need to know if you're planning to fly during the Covid-19 pandemic?
Millions in the UK will soon be asked to monitor who they have been near to combat coronavirus.
The threat of Covid-19 in England is to be ranked through a five-level, colour-coded alert system.
Changes have been announced to guidelines in England on exercise and social distancing.
The pandemic will cost the government hundreds of billions of pounds. Where will it all come from?
Face masks, fresh air and porridge - how people tried to curb a deadly flu pandemic in 1918.