Forward movement (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">forward movement</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for progress that I've seen before include "Advance - promotion" , "Headway" , "Breakthrough - advance" , "Mature" , "Move forwards" .)
(Other definitions for progression that I've seen before include "(Mathematical) sequence" , "Forward motion" , "Gradual advancement" , "Gradual development" .)