This website has a basic free search facility which is easy to use.
It also has a paid for service.
Just by entering a few details into the free service it will give a result. If it finds a name match it will give you the address(es) for the name you are searching for, a map of where that address is located and a list of other people over the age of 18 that live or have lived at that address between 2002-2015.
Here is what the website says:
UK Electoral Registers 2002-2015
Search for free to street level with a name or better still with two known names. It is easy to search our UK electoral registers for 2002-2015. They contain the names and addresses of most UK citizens over the age of 18. Ideally you should enter a first and a last name when you search for someone, you can search with first or last name plus street and town or full postcode.
Our electoral roll People Search covers England, Wales, Scotland (Inc Islands) Northern Ireland, Guernsey & Jersey. The Free People search tool is simple to use and will return up to 300 results on phase one search.
The free electoral roll search will return a summary of available results.