It does seem rather ironic, from a UK point of view, that Channel 4 has put this documentary forward given the excellent, albeit all too short-lived, coverage they gave to sumo in the late 198s/early 1990s including the London Koen in 1991. Having worked very hard up to the point, they then allowed their sumo coverage to fizzle out after showing the 1992 Hatsu Basho.
Swami