Can anyone help me find something to do on Halloween. My niece is coming over from the states, and has asked what we will do for Halloween. But, I don't think it is celebrated over here quite as much as it is in the states. She doesn't know a sole in this country, so there won't be any getting together with friends. I was hoping to find some kind of Halloween party that is open to the public. Anywhere from Middlesex to Surrey to London would be fine. Any ideas?