It never asked my end date in the application. Yeah I figured that would be the case, as soon as I pay there is a window. Is the length of time for that window known cause I can't find it stated on the site. Edit: Actually unless you mean the end date for my travel history, which I left blank and it...

I will be handing in paperwork in Canada yes.
I have completed the travel history section already as well. And yes I am still currently in the UK.

I'm currently in the UK just about to transition from T5 to T2(G) (hopefully) Have my CoS and have just paid my IHS and was about to get the last fee for the application paid up. But I'm wondering if I do so now but am not planning on having my appointment till Sept 6th, should I wait to pay the app...