'Dangerous' motorbikers 'taking mickey' in park - but police have limited powers to deal with them Police are 'frustrated' with the issue Bikers are causing a problem in Castle Hill Country Park (Image: Getty Images/Westend61) Subscribe today to get the latest headlines straight to your inbox with our free email updatesInvalid EmailSomething went wrong, please try again later. Sign up We use your sign-up to provide content in ways you've consented to and to improve our understanding of you. This may include adverts from us and 3rd parties based on our understanding. You can unsubscribe at any time.More info