I haven't had one from Boris but I had one from my doctor, an identical one from the hospital and another which was co-signed by theSecretary of State for Health and Social care & the Secretary of State for Housing, Communities and Local Government!
The last one informed me that I'm in the 'Extremely Clinically Vulneable' group and shouldn't leave the house for ANY reason... i.e stay at home at all times. For at least twelve weeks.
Two down, ten to go... (at least).

But I'm still better off than poor Boris. Hope he gets better soon.