The country recorded 31,795 new cases, up from 36,389 cases on Friday, but the daily number of coronavirus-related deaths is not yet available due to technical difficulties in processing the data.
At the same time last week, 54,674 infections were recorded as well as 41 deaths.
The latest data also shows that an additional 43,153 people in the UK have received their first COVID-19 vaccine, bringing the total number of adults who have received a vaccine to 46,519,998.
Another 191,045 received their second dose, bringing the total number of double-injected adults to 36,953,691.
Meanwhile, government scientists have warned Coronavirus testing services could be overwhelmed due to the increase in infections.
The scientists’ warning comes as it has been announced that a new variant of the coronavirus is under investigation by Public Health England (PHE).
Experts are analyzing instances of the B.1.621 variant found in pockets across the UK.
The variant, which has not been shown to cause more serious illness, has also been found in other countries, including Colombia, the United States and Spain.
The government announced that it expand workplace testing and people in frontline roles such as police, firefighters and border forces, will be able to avoid quarantine – regardless of vaccine status – if they are in close contact with a positive COVID case.