The Camden Highline, a multimillion-pound effort to transform a disused rail line into a greenery-filled walking and cycling paradise, has been all but scrapped.

Nearly a decade since it was conceived as London’s answer to New York’s fabled High Line , the project has fallen victim to high costs and the energy crisis.

The scheme’s organisers said: “The team was built around the ambition to transform a disused railway viaduct into a new local park, garden walk and wildlife corridor. However, over the last five years, the UK has experienced a series of sustained economic shocks, with construction costs in particular rising well above general inflation.…