Leak - finding the cause…

[JustAnotherJane]

There is a leak at the top of our kitchen window. Water tends to come through when the rain is heavy and it’s windy and it is now causing a damp patch.
Where do we start - in trying to find the issue?
There is another window above it.
Images of inside and out.
The leak was there before the drain pipes.

 

[footprints]

Chances are it is running down in the cavity wall I would start looking at the seal around the upper window and the apex above it.
Not an easy one to give a straight answer on I'm afraid.

 

[JustAnotherJane]

That’s what I suspected. What should I look out for (Cracks / gaps that allows the water in I presume?)
It’s tricky to get to as the garden slopes (quite steep) down in front of that side of the house.
If we make sure to reapply a suitable filler / sealant as a starting point and see how it goes?

 

[Notch7]

have a look at the window above -see if there are cracks or gaps around the cill in the corners

the pic of the leak inside indicates the water is getting in around the lintel

I suppose it could be getting in at the head of the kitchen window -dripping in around the head -maybe pull off that internal plastic trim and see if there is evidence of a water staining indicating a leak path