Who's car park am i in got by the sarge

It is a car park for a tourist attraction (honest!)

Sussex?

Hammerpot brewery on the van, in Sussex maybe■■?

possibly a garden centre on the south coast round Chichester /Arundel area

No no and thrice no!

Twin lakes

Jimmy’s Farm?

The Sarge:
Jimmy’s Farm?

bingo! We have a winner!