The Government has said that responding to a wider pandemic of coronavirus may require further emergency legislation. The Government announced on 8 March 2020 that it intended to introduce a Covid-19 emergency bill.
https://lordslibrary.parliament.uk/c...y-legislation/
The powers didn't come into place on the 8th March. The announcement that emergency powers were going to be granted was on that date.
I think you owe me an apology.