I've just been listening to various versions of the March Past on Spotify - huge variations in tempo! The fastest, by the Band of the RAF Regiment, clocks in at 1'47" - with the Central Band of the RAF doing it at a decent speed - at 2'00".

My father, who was in the RAF, always maintained that they marched at Guards' pace. Standard pace is 120 to the minute, though some regiments march at 140 and others at 112. Even at 140 a minute, I doubt that the RAF could have kept up with the 1'47" tune!