Hi I like to ask if income statement of account is required for the exceptional promise category
NO. Not required for stage 1. For stage 2, please refer to official home office guidance as we can not advice about stage 2.
Thanks a lot for the clarification. One more question please: how do I scan a two-page document front-and-back to become one page without having two pages?
Regarding income statement - when I applied in 2016 there was no need to do this. And as I try to stay up-to-date with my knowledge in Tech Nation Visa, there is no requirement for applying any kind of income (bank account) statement neither on Stage 1 nor Stage 2.
As I have written in my Blog, answering the same question, talents may be poor
Regarding your second question about two pages - you are not limited in your ability to apply two-sided A4. Use front and backside of the same plain white A4 page.
I wrote about this lifehack here.
By the way, I have done this in my visa application too.
Thank you so much. I am so encouraged.