The book of London marriage licences, 1521-1869, has been digitally scanned and is available online via the Internet Archive. Contributed by the University of California Libraries, the book can be read online or downloaded in a number of formats, including PDF, Kindle, and EPub. It is an alphabetical index by husband's surname, with an index of matches for the female partner included at the back, and is 866 pages in length.
Examply entry :
Mason, Stephen, of St Bennett, Gracechurch, London, Merchant, bachelor, about 26 and Mrs Sarah Woolrich, of Bartholomew Close, London, Spinster, about 25, her father' consent - at Barrett, co Herts. 18 June 1677. V.