1) How do I clean my UPVC fascias, guttering and windows?
Clean surfaces with plenty of clean, warm soapy water (washing-up liquid is suitable) and wipe dry with a clean soft cloth.

2) There is standing water in the gutter on my conservatory.
The conservatory has a level base and is designed to hold up to 1 inch of standing water at any time, so hopefully this should not cause a problem.

3) Do you start a job and stay with that job until it is finished.
When we start a job for a customer, we always stay with that job until it is fully completed.