The choice of words is deliberate and identifies which is against the law and which is simply advised against.
Even though it isn’t illegal for someone to park in front of and block your driveway, it’s certainly a problem.
The Metropolitan Police has issued some advice on how to handle this situation.
The official information reads: “If someone has blocked your driveway so you can’t drive in, we appreciate this can be very frustrating.
“If you can find the owner of the vehicle, we’d first recommend asking them politely to move it.
“If you can’t find them, try leaving a note on their windscreen. After all, they may not realise they have caused a problem.”