The 'Dr Williams' registers, along with those of the Wesleyan Metropolitan Registry of Births and the rest of the Non-parochial register collection at TNA are online at BMDregisters.co.uk, and as one of the subscription packages at TheGenealogist.co.uk
They have been digitised and indexed, and the rest of the collection includes Quaker records, and the notorious Fleet registers as well as various nonconformist registers including some of the large London burial grounds such as Bunhill Fields.
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