What would you do if you had this large tarmacked area in front of your house that you want to keep open for parking on yourself but stop others from using it as a car park for near by shops? I do a bit of a swoop onto it (orange arrow on diagram) so that I can drive off it facing forward (busy road, footpath, school & nursery next door so lots of kids at certain times of the day so I don't want to be reversing off it).
Here's what I've thought of so far:
Fence - would need to apply for planning permission. If I got planning permission, I can't actually afford to put up a fence. 
Planters - someone would steal them/mess them up? Would I be liable if someone tripped over them? (People also walk across it/stand chatting on it/etc. as if it were the footpath.) And if I placed them to stop others driving on, it would prevent me from driving on too.
Signs on the front of house - my house has little kerb appeal as it is, so I don't really want signs on the front of it. I also think that if people are so unthinking enough to park right up to my front door anyway, then a sign isn't going to prevent them.
Penguin bollards or similar - similar issue with the planters, if they're placed to stop others, then they stop me too. Also, would need quite a few and they're not very attractive for a residential property.
I put notes on occasionally, or talk to people if I see them parking there. I got told to fuck off recently for just mentioning that it was private property and not a car park. I think it's probably not worth it because I imagine it's a steady stream of different people, not the same people every day.
Anyone got any other ideas? I fear it might be an unsolvable issue short of completely fencing it off? I really don't mind the school parents parking there to drop off and pick up, but for some reason I can't make myself quite so zen-like about the people using it in the day time when going to the next door shops. It's not all day every day, but it's becoming more frequent due to a change next door, so I'm just pondering on it today after getting up this morning to find someone's car bumper about 6 inches away from my front door.