Covid news live: tenth Scotland Omicron case has no link to previous nine; Sweden warns of new restrictions next week

By Martin Belam (now) and Samantha Lock (earlier)

04:32

The advertising boss Sir Martin Sorrell has said clients are cancelling Christmas events in response to Omicron, and criticised the UK government for failing to give sufficient guidance on masks.

Sorrell, the executive chairman of S4 Capital and founder and former chief executive of WPP, said event cancellations had gathered pace since the new Covid variant was identified.

“What we are seeing our clients doing and other people [doing], the answer is they are … cancelling,” Sorrell told BBC Radio 4’s Today programme. “There has been quite a sharp series of cancellations since this happened just three, four, five days ago.”

Read more of Mark Sweney’s report here: Ad boss Martin Sorrell criticises lack of masks guidance as events cancelled

03:54

03:50

Scientists find possible trigger for AstraZeneca jab blood clots

03:31

Omicron variant case detected in Paris region of France

03:30

03:13

02:43

Sweden's Public Health Agency warns it could impose new restrictions next week