Wiki tells us this is GB's only remaining cable-operated street tramway. The cars are permanently fixed to the cable. In San Francisco the cable is always running and the cars attach and detach. Opened in 1902/03, the winding gear was steam powered, changing to electric in 1958.
The first section is a steep walk and then it levels off. Or you could go by tram. It's a must do thing and most people did.