Does mould beside glazing prove condensation is the cause?
Report condensation and wetness observations, but let appropriate assessment consider the source. Location alone does not settle the explanation.
Should I include the wall in the photograph?
Yes, where safely accessible. The frame, reveal and adjacent surface give context that a tight view of the marks cannot supply.
Does treatment include repairing a failed window seal?
Replacement or repair should be clarified separately. Ask what suitable surface work and additional tasks are actually agreed.
Can blinds or furniture stay in the way?
Explain restricted access at enquiry stage and ask what preparation is appropriate. Do not move heavy items or disturb growth simply to gather images.
What if the frame looks better but wetness returns?
Record and report the change. Appearance alone does not prove that the moisture source has been corrected or further work completed.
Is glass cleaning the same service?
Ordinary cleaning has its own tasks and scope. Mould and moisture concerns need requesting directly rather than being assumed in a general clean.