One of most fascinating burial grounds in London is now online – Bunhill Fields. North of the square mile of the City of London this is where your non-conformist/dissenter ancestors may well have been buried. The original records are kept at the National Archives under RG4. The time span for this collection is 1713 – 1854.
Wikipedia has a good page on Bunhill – http://en.wikipedia.org/wiki/Bunhill_Fields
As does the Blake Society – http://www.blakesociety.org/blakes-grave/bunhill-fields-a-history/
It looks as if it might be a sunny weekend so nothing like a new set of genealogy data to browse whilst in a deck-chair in the garden
Image – Creative Commons David Williams http://www.geograph.org.uk/profile/2216