Inside Bunhill Fields – the nonconformists' graveyard

The gravestone of Susanna Wesley, the mother of John Wesley, founder of Methodism Photograph: Graham Turner for the Guardian

John Bunyan's tomb in Bunhill Fields. He was a tinker who became a travelling preacher and began writing, with Pilgrim's Progress becoming his most famous work Photograph: Graham Turner for the Guardian

Graves and gravestones in Bunhill Fields cemetery Photograph: Graham Turner for the Guardian

The plain gravestone of artist, poet and visionary William Blake Photograph: Graham Turner for the Guardian

The cemetery's monument to Daniel Defoe, author of Robinson Crusoe and Moll Flanders Photograph: Graham Turner for the Guardian

Daffodils grow among graves in the Islington burial ground Photograph: Graham Turner for the Guardian

Pigeons perch on a gravestone Photograph: Graham Turner for the Guardian

A detail of a skull on the side of a tomb Photograph: Graham Turner for the Guardian

A pigeon perches on a grave in Bunhill Fields cemetery Photograph: Graham Turner for the Guardian