And it's not days that are counted, it's nights. ie: one night= two days!
Travel days to/from UK used not to be counted, now they are.
In reality it is near impossible to treat UK as home and not pay up.
And then there is the question of the £30,000 annual charge for being a non-taxpaying expat. WHAT?
Only one way.......leave UK for good and live in a fair country.