The Castle isn't open to the public, due to a lack of funding in the past few years. It's run down, and now the Council want to defund the park entirely, selling off some of the land to private developers. They didn't charge any entry fee to the grounds, though, and it only cost 1 pound to park our car. If they want more funding, just charge 2 pounds to park--your profits would double, and I'm sure people would be willing to pay it.
The road to the castle