If you want to find crime rates and number of incidents of anti social behavior in a neighborhood in England or Wales, you can use www.police.uk/ . Its very simple to use: type the address or post code of the area that you want to find out, click search, a map with the number of crimes will appear like the following to give you ideas what types the crimes are and the number of crimes for a calendar month.
The site is very useful when you consider to move into a new area or buy a house.