When processing payroll, I record the payroll, and don't submit the STP report straight away, so I can check that job numbers have been allocated to all transactions by running a consolidated jobs P&...
I moaned about lack of decent reporting BEFORE you hit the STP report, and was ignored.
So i am in the same boat as you - DO NOT DECLARE - finalise payroll, and then go to the STP upload/payroll reporting centre.
However, I am on desktop, and it is one click on the icon, one click and you are there.
(has never gone to the browser)
Hope this helps !