London
London Parish Register images are on ancestry.
Westminster on Findmypast.
Allegations for Marriage Licences Issued by the Dean and Chapter of Westminster, 1558 to 1699 (transcription)
http://www.archive.org/stream/allega...ge/n9/mode/2up
The Collegiate Church of St Peter at Westminster (Westminster Abbey)
Baptisms, marriages and burials 1604-1875 (transcription)
http://www.archive.org/stream/marria...ge/n6/mode/2up
Allegations for marriage licences issued by the Bishop of London, 1520 to 1610 (transcription)
http://www.archive.org/stream/allega...ge/n4/mode/2up
Calendar of marriage licenses issued by the Faculty Office (of the Archbishop of Canterbury), 1632-1714 (transcription)
http://www.archive.org/stream/calend...e/n13/mode/1up
The register book of marriages belonging to the parish of St. George, Hanover square, in the county of Middlesex, vol. 1, 1725-1787 (transcription)
http://www.archive.org/stream/regist...e/n13/mode/2up