Whether you're an Englishman or not, your home is your castle, as the saying goes.
These days, however, not many of us have moats and there's little to stop unwanted visitors knocking on your door.
Consumer NZ says everyone has an "implied licence" to enter your property and knock on your door.
The organisation has launched a campaign against door-to-door sellers because, it says, of the serious complaints it gets.
A recent Consumer NZ survey found 70 per cent of its members didn't like door-to-door salespeople and wanted them to stop calling.