anyone up on street parking laws?

just moved home, we have space for 1 car on drive and can park outside house without blocking our drive.
t'other day, the nob from next door who'd parked half outside our house meaning i had to virtually kiss his bumper to leave space for other car on drive to get in or out.
anyway, he come knocking on our door cos he couldn't get out, they were trapped between my car and a post and will i move it....
then he demanded....not ask.... i dont park there anymore,
that bit of the street is his and i should show him some respect as they'd parked there for 10 years!!
i was gobsmacked! told him in no uncertain terms to go **** while there's a tax disc on my car,
now my missus n i are usually home 1st and now we make it impossible for em to park there at all,
they have their own drive too but refuse to block themselves in and demand that we have to faff about.
what i need to know is it a valid driveway if the kerb isn't dropped or the bits people stick on the edge, cos i can easily make the garden into an extra drive and they cant park there period....btw. they hit r'lass's car the 1st day we moved in and smashed her lights!

 

Well

Never park on double yellow lines.

Any help?