1 "flaw" i found on using the brompton folding pedals is if first fold the pedals and then fold the bike, the pedals can hit the chainstay and damage the paint.

I mistakely did this and wondered why i could not get it to fold.

brompton should design a stop to prevent the pedal from folding back too far as to prevent paint damage from the pedal hitting the frame when bike and pedal fully folded.