The 571 is a flying bus from the made up bus company Riverside bus (Riverside Bus's page is at


One end of the 571's journey is at East Hackney, where it (most often) starts, but occasionally it terminates at Hackney air station. From East Hackney it takes a short 2:08 journey to Hackney air station, from there it takes 5:24 to get to the north London air Portal (air portals are a made up device, there will be a page about them soon).