It's never parked legally as it is always parked half on the footpath. As we know, the footpath is NOT a car park even thought millions of drivers think it is.
As annoying as it is, it's not illegal to park on the footpath or pavement unless you live in London.
It is only causing an obstruction if a wheelchair user or someone with a pushchair can't get through.
I live near a school and I have to put up with teachers/assistants/helpers parking outside my house all day. Every day.
The parents quite often block my drive while dropping off their kids.
Do I like it? Not particularly ....but I bought a house near a school so I can't complain.
We might own our drive but we don't own the bit of road outside our drive, so unless there are double yellow lines outside, one can't really complain.