Support public health measures or defeat a Tory government what should ban opposition leader do?

I would absolutely keep the nations health interests at heart. We just can’t go down the route of leadership contest or even a general election at the moment as we must remain focused on what is best for the people.

You can’t ignore a potential loss of life or total collapse if our health service because you are navel gazing.

Depends which you think is the most important the health of the nation or trying to get a vote of no confidence.
Now if Starmer is the man people expect him to be he will back the regulations rather than scoring points against the opposition