Active job

Possible roof leak?

I suspect a leak above a bay window where it has a small old tin roof. I have removed carpet under the bay window seat and can see fresh water stains, prior to this I have noticed water pooling under one corner window. Under the house appears dry but this small patch of tin roofing seems pretty old, I have not checked it yet but it can be accessed easily at the front of the house. Small job that may require re-roofing