In 2014, as official photographer for the Arkwright Society, Ashley was commissioned to produce a photo book of the Derwent Valley Mills World Heritage Site. The project took flight in 2019 when he joined forces with fellow pro Ian Daisley and invited additional photographers to participate. Ashley's talk will take you through the book's three sections—Industrial Heritage, People & Places, and Wildlife— and show how the book encapsulates the valley's historical significance, its communities and its rich biodiversity.