Latest UK Electoral Law

Parliamentary Voting System and Constituencies Act 2011
http://www.legislation.gov.uk/ukpga/2011/1/contents


Explanatory notes of Legislation -
http://www.legislation.gov.uk/ukpga/2011/1/pdfs/ukpgaen_20110001_en.pdf


Wiki Summary -
http://en.wikipedia.org/wiki/Parliamentary_Voting_System_and_Constituencies_Act_2011