ttp://www.electoralcommission.org.uk/__data/assets/pdf_file/0010/100702/Report-on-the-administration-of-the-2010-UK-general-election.pdf~page=34.
http://www.electoralcommission.org.uk/__data/assets/pdf_file/0010/100702/Report-on-the-administration-of-the-2010-UK-general-election.pdf~page=34.