Broadway - Water leak

Sitting in Scotland and it's raining outside (not unusual!), but unfortunately we have water running inside between the cab and habitation area.  I have looked outside and it seems to be forward of the cab to habitation seal - could it be the awning fixings as it is on that side - anyone had anything similar?  Will contact A/S too for their advice.

On our 08 Sigma, ( much older with recessed awning) had a leak ,water Ingress in the same area. 
We had just had the awning replaced and the dealership , the apprentice had inserted two longer screws than he should have ,thus piecing the roof skin, I was not a happy bunny.
Boaby