And I am booking the appointment at ukba.homeoffice.gov.uk website but on the payment page (worldpay screen), I have to pay £1426 full amount online.
So I am confused that in the application form (SET-0), there are a space to complete the payment for in person (£1426 for my application), and if I pay £1426 online when I booking, do I need to pay again on the day of application at PEO? Or they will ingore (and not taking) the payment from my application form?

Please advice me thanks
