Historic Endurance Rally Organisation (HERO) and Endurance Rallying Association (ERA).
The two big ones for our type of event. ERA was founded by the late Phillip Young and is the granddaddy for tough events. The Peking to Paris is one of theirs. ERA were taken over by HERO some years ago and they now run rallies of varying complexity around the UK, Europe and the World.
Bespoke Rallies. That’s the firm we went to Madagascar and Sri Lanka with. Apart from adventure tours laike the last two, they also run competitive events in UK and Europe.