Funded by the Economic and Social Research Council, and produced by the universities of Sheffield and Hertfordshire, the site allows both amateur and professional historians to search the archives for individuals.
Although anyone can search London Lives, registration is required. Registration allows you to use a personal workspace to link documents together and create biographies of eighteenth-century Londoners. It also gives you access to advanced search facilities and the project wiki (coming soon), where you can write and share biographies. Registration is free.
London Lives is available now at http://www.londonlives.org/