quick visa question

[eastender]

I have a B1/B2 visa in my passport. I need to enter the visa number on a form. There is a 15 digit control number in the right hand corner & an 8 digit red number bottom right. Which one is the visa number? thanks.

[Michelle]

Having checked our B1/B2 visas there is the long number at the bottom on your visa which begins with your passport number not sure if that is the long number to use, or may be an idea to contact US embassy in London and ask them. Sorry cant be of more help.

[rocky7]

Visa number is the red one.