if im cleaning a first clean i always clean the frames inclu the top frame.once their clean though i usually just give the top frame a once over every other clean(upper windows) but clean the sides of the frame.again the ground floor windows get the same treatment.the top frames dont get that dirty once their clean so IMO dont need cleaning every time its wasting time unless you can see the dirt.
anyone who never cleans the top frame is a cowboy IMO IF YOUR USING THE POLE GET IT CLEANED FIRST TIME THEN I QUICK SCRUB AND RINSE EVERY OTHER CLEAN!!

not cleaning the top frames EVER looks bad especially if the rest of the frame is nice and clean.the only acception would be certain types of wooden frames but all plastic frames should be cleaned as a matter of course.
some of you have the cheek to ask for £15 for a small 3 bed semi then dont clean all the frame? :

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rip off merchants who deserve to lose some work!!giving wfp a bad name in some areas.thats my view anyway.
regards
dazmond