“So, confirmed that Buckinghamshire now going into tier three. Very disappointing,” wrote Cllr Tett on Twitter.
“I reluctantly accept that the infection rates and other criteria are moving in the wrong direction. We need to follow the rules to protect each other.”
Buckinghamshire has seen its weekly rate of confirmed cases per 100,000 residents climbing since October.
In just over a week, Cllr Tett said he had witnessed the infection rates per 100,000 people rise from 118 to 142 for ‘all ages across Buckinghamshire’.
The current weekly rate now stands at 211, according to Buckinghamshire Council’s COVID-19 Dashboard.
Confirmed cases in Buckinghamshire, as of December 16, stands at 9,790.