Book swap drop offs - in pictures

Tom's Midnight Garden by Philippa Pearce, left by periphyseon in a supermarket trolley in Hungerford, England Photograph: periphyseon

The Choir by Joanna Trollope, left by judybrunton in sight of the chapel on Kings Parade, Cambridge, England Photograph: judybrunton

The Blue Book by AL Kennedy, left by WladyslawMejka among the vegetables at Waitrose in Morningside, Edinburgh Photograph: WladyslawMejka

The Star Rover by Jack London left by sittlington in a phonebox in Bangor Photograph: sittlington

The Secret Lake by Karen Inglis, left by Karen Inglis on a tree stump near the Azalea Pond in Isabella Plantation, Richmond Park Photograph: Unknown

The Book Thief by Markus Zusak left by beaufortten in a Cambridge bicycle basket Photograph: beaufortten

Twilight by Stephenie Meyer set adrift by Tattlemouse at Edenbridge Leisure Centre Photograph: Tattlemouse

Untold Stories by Alan Bennett left by nessiefuery in a greengrocers on the Isle of Islay Photograph: nessiefuery

An unknown book, left by gregjirving in an undisclosed location Photograph: gregjirving

Storyteller by Donald Sturrock, left by Ben Terrett near The Golden Hind in St Mary Overie Dock, London Photograph: Ben Terrett