What happens when you let the BBC enforcement people into your house?

Always been curious to what they actually do if you let them in.

Keep getting the letters threatening a visit, not that I'm worried tbh. We're in our twenties, why would we watch anything on BBC lol

Always found it weird that the burden of proof that you DONT use their services is on the general public? Imagine amazon kicking your door down to check that you don't have prime 😂