The Book of Constitutions is the rule book of the United Grand Lodge of England that regulates all Lodges and Freemasons. The current edition, which includes all updates, is available for download in four sections: Craft Rules, Craft Plates, General Index and Grand Charity. Link to the United Grand Lodge of England to view and download. 

Also available for download on the United Grand Lodge of England website is the current edition of the booklet entitled Information for the Guidance of Members of the Craft