Roof leak above window on first floor - Roofing job in Birmingham, West Midlands

Job description

There is a leak above the window on the first floor resulting in dripping and damp. Rain water appears to be entering from the roof and trickling down the cavity. The house has a second floor attic room and so access to the roof from the inside is difficult. There is no sign of a problem in the attic. The links below are photographs of the problem window from the inside and outside.