Along with Switzerland, four other countries including France, the Netherlands, Poland and Malta may also be added to the list.
The list requires arrivals to quarantine for a 14-day period.
Over the weekend, the UK reported its highest number of new infections since the end of June.
The UK government will meet on Thursday, August 13th, to consider expanding the quarantine list.
Infections have also been rising in Switzerland, particularly in the western canton of Geneva.
As reported by The Local Switzerland, the rate of new infections per 100,000 residents was over 100 in Geneva in early August.
‘Officially a high-risk area': How Geneva became Switzerland's new coronavirus hotspot
The mark is well above the Swiss government’s ‘high risk’ classification of 60 per 100,000 – meaning that if Geneva was a separate country, residents would be forced to quarantine upon entering the rest of Switzerland.
Switzerland's current infection rate is 25 new infections per 100,000 people – which is slightly above the UK's threshold of 20 per 100,000.