Flat roof, best thing to do?

[morphe]

Hi i have a flat roof on an extension, there are no leaks or anything but it looks pretty awful, plus there a little dips appearing. can anyone point me in the direction of what i could do.
sorry about the pics, my camera i think is on its way out.

 

[Xenon]

my camera i think is on its way out.

Did it take the pics with it.......

 

[morphe]

my camera i think is on its way out.

Did it take the pics with it.......

yeah

 

[dsr30]

it looks untidy,but its just superficial....clean and prep surface and apply solar reflective paint or lay chippings....however the dip in the roof suggests that chipboard was used as decking and has started to degrade...have you been on the roof and tested by treading carefully on affected area