The people who go back to work in their local communities are not going to spread the virus across the whole country
The job of an MP is to be in their constituency to listen to constituents and then go to parliament to try to do something to right the wrongs in this country.
How are they to do that without spreading the virus?
Surely all MPs should be at home in their constituencies and conducting their parliamentary work online, as they have been doing quite well for the last weeks?
MPs are not like builders, bus drivers, surgeons, farmers or supermarket shelf stackers. ,Their work only involves discussions, debates, letter writing, committee work, speeches and voting. All of that can and should be done online.
The government advice is still, if you can work from home do.