AH yes!
It's on my "to do" list!.
I tend to *think* (cough, cough) a few years ahead of what I need.....
At the moment (subject to change of course) I have to .....
Sell our house
Build new house
Convert 1 flat into 2
Build another new flat (though TBH I won't build it; get a builder in!!)
Update HMO (see it's there!; just moved down the list a bit.................)
Of course with all the new 'anti landlord' taxes etc. it makes things rather tricky.