The restrictions on households in Glasgow is having an impact, the First Minister said.

Nicola Sturgeon said that the ban on visiting other households is slowing the increase in cases across the city and the wider west of Scotland where extra lockdown rules are in place.

However, she said the cases were still rising as the daily figures showed another 101 positive tests in Greater Glasgow and Clyde.

On Monday she announced they would need to remain in place for at least another week.

Ms Sturgeon said: “The good news is that the early indications suggest that the restrictions in place in Glasgow City, East and West Dunbartonshire, Renfrewshire and East Renfrewshire might be helping to slow down the increase in new cases.

"That at this stage is positive but the number of new cases in these parts of Greater Glasgow and Clyde still remains high and is still increasing albeit we think at a slower rate than would have been the case without these restrictions being in place.”

The latest statistics showed another 267 cases across Scotland but some were likely to be from previous days due to a backlog in processing test results.

She said that talks had taken place with the UK health secretary Matt Hancock and it was hoped it would be resolved.

She said: “I have a concern about the capacity constraints right now with the UK-wide system and for Scotland in recent days this has not been an issue of access to testing slots at regional testing centres or mobile testing units but instead it has been one of access to sufficient Lighthouse laboratory processing and it is this that has led to a backlog in the system and longer turnaround times for tests than we want to be the case.

“As this is a UK-wide system we are not able to resolve this on our own and the issues are impacted by demand elsewhere in the UK.”

The method of counting people in hospital has changed as it was previously including people in hospital who had Covid but had recovered and were being treated for something different.

Under the old measure the figure for yesterday was 262.

But counting only those who first test positive for Covid during their current stay in hospital, or in the two weeks before their admission the number was 48.

Ms Sturgeon also warned that fraudsters are using the coronavirus test and protect scheme to try to scam people.

Nicola Sturgeon said described them as “utterly despicable” and warned people to be on their guard for bogus callers on the phone.

The First Minister said fake callers have been claiming to be from the Test and Protect and claiming payment is needed to book a test.

She said they are “truly and utterly despicable”

Ms Sturgeon said: “Covid tests are free and will always be free. Nobody from Test and Protect will ask you for financial information, bank or credit card details or try to sell you anything.

They will only ask where you have been and who you have been in contact with.”

She said you will receive a text first then a phone call and the caller will know your name.

Ms Sturgeon said they will call from the same number which is 0800 030 8012.

She said “if you have been the victim of a fraud call the police on 101. If anyone asks for bank details or computer passwords put the phone down.”