Gutters, soffits and fascia are the bits of the property none of us ever check until we have a problem, then its too late. Its wise to have them inspected now and find out how much it will cost, if you are having a double glazing quote from us then why not get them priced for at the same time.
Have a quick look now, I bet you the paints a bit flaky and dull, and did you fix those leaking gutters? Possibly not, if the gutters and fascias are old, they won't last forever.
The gutters, soffits and fascia are manufactured in white uPVC which is the same material as your frames for double glazing so they will all look the some. Behind that bit of roof are rafters, that's the most important element of your roof, and if they get wet it will rot it could permanently damage the timber that could cost you tens of thousands to repair, It makes sense to get your gutters, fascia and soffits checked over now!