Thanks for the replys. I've attached another couple pictures. One is another angle, the other is the underside of where the ridges meet.
The roof has been signed off by building control. My concerns come from the fact we have had so many problems arise all over our build. We are not on good terms with our builder and he has been sacked from the two jobs following ours.
The roof has been a particular problem with multiple leaks. So guess just looking for some reassurance that structurally we will be ok.