As a new heaven is begun, and it is now thirty-three years / since its advent, the Eternal Hell revives. And lo! Swedenborg / is the angel sitting at the tomb: his writings are the linen clothes folded up.

As Swedenborg was the mystical teacher who later 'turned on' great Europeans such Balzac, Baudelaire and Strindberg, so he had performed a similar service for Blake at the time of the French Revolution. For some, Swedenborg seems to prophesy Blake.

For others, he is a figure of fun, who has never fully recovered from Blake's satirical portrait in The Marriage of Heaven and Hell. The two seem to appear together in Blake's recurring image of London as an old man led by a child.

McDevitt's walk begins at the site of Swedenborg's burial, ends at the site of his final London dwelling-place and death in 1772, and will try to locate the site of the Church of the New Jerusalem where Blake and Catherine attended a weeklong conference in 1789.

2pm. £12. Meet outside Shadwell DLR. 2pm. Approx three hours ending at Farringdon tube. Please click here for tickets.