Bunhill Fields, Missing Bones

There has been a little bit of a splash about the recent Grade I Listing of the Bunhill Fields nonconformist cemetary.  The final resting place of Bunyan, Blake, Defoe, Isaac Watts, Thomas Newcomen and others.

Although the headstone is easy to find, The Guardian article referenced above says of Blake's actual grave that:

His bones were lost in a partial clearance and landscaping in the 19th century and the original sites of more burials were lost as a result of 1960s landscaping to repair second world war bomb damage.

In fact, the Blake Society thinks it knows where they are - see here for the link to the detailed guide.