Tier four

Higher than very high.

Tier four was a new and unexpected Christmas addition to the UK's three tier Covid alert system of Medium, High, Very High.

"Jo - you took a lot of beans. How high are you right now? Like, very high or tier four high?"

"Sounds like you were under a lot of pressure to deliver on that project!" "Yeah, seriously, it's been tier four."

It was all to play for and the stakes were tier four.