oh..I need a scanner...or would photos from mobile camera will suffice ?
Photo is fine as long as the whole document is visible and legible.
so I get to create this account with external party only after paying £2.5k correct ?
Yes.
and how long do I have to send the docs
Must be uploaded before biometric appointment.
and which is considered as a the 'application date' ?
Date of application is the date you submit and pay online and NOT the biometric appointment.
reason is my wife's visa expired on 15th, so do not want her to be overstayer and if it requires scanning I need to organize this.
She must apply online before her visa expires.