Verify NS&I account ownership

You'll find your NS&I number on any letter you've had from us since you've registered. It's the unique identification number we sent you when you registered for our online and phone service. Your NS&I number is 11 digits long and starts with an 11, 21, 31 or 41.

You'll find your NS&I number on any letter you've had from us since you've registered. It's the unique identification number we sent you when you registered for our online and phone service. Your NS&I number is 11 digits long and starts with an 11, 21, 31 or 41.

You'll find your NS&I number on any letter you've had from us since you've registered. It's the unique identification number we sent you when you registered for our online and phone service. Your NS&I number is 11 digits long and starts with an 11, 21, 31 or 41.

You'll find your NS&I number on any letter you've had from us since you've registered. It's the unique identification number we sent you when you registered for our online and phone service. Your NS&I number is 11 digits long and starts with an 11, 21, 31 or 41.

You'll find your NS&I number on any letter you've had from us since you've registered. It's the unique identification number we sent you when you registered for our online and phone service. Your NS&I number is 11 digits long and starts with an 11, 21, 31 or 41.

You'll find your NS&I number on any letter you've had from us since you've registered. It's the unique identification number we sent you when you registered for our online and phone service. Your NS&I number is 11 digits long and starts with an 11, 21, 31 or 41.