If I recall correctly, Power of 10 were unable to process the results for fell races due to the admin load it incurred (I emailed at the time & had a reply that I think said something along those lines). Fell race results never counted towards P10 or Run Britain handicap, even when they were uploaded. On another note, does anyone ever win an HRM for improving their handicap on Run Britain, or is the competition a data-harvesting rouse?