Its a hoax pm, that first screen asks you for your account number and more, is a add on screen.
It’s a very simple idea, send out emails, and ask for personal details then link to the site.
Or do you think that banks send out such e-mails to non-customers?
Real site.
http://www.natwest.com/
Can you see the log in option at the top of the screen pm?
Now why do you think there asking for the same information twice pm?
Ps I am only holding that £24 million for my good friends in Nigeria. Talk about lucky I put my old collection of 1950’s toilet chains on e bay and this nice man in Nigeria is paying me £1.50 for them, I have to send him the different. (He popped this gas bill cheque in the wrong envelope and I bank it without noticing.)