Has anybody successfully used a Canadian phone number as 2 factor authentication on an NS&I account? Apparently on the NS&I system, all phone numbers must start with a zero, even those with a +1 country code, which means the verification call/text fails. Anyone else had the issue? I spoke with a couple of people (30 mins on the line and a big fat phone bill coming my way) and they were unable to fix it.

I just logged in to my NS&I account and the 2 factor authentication worked just fine. Received a phone call with the one time code almost immediately. Using my Canadian mobile number.

International dialing from the UK to NA, 00, the country code is zero, long distance code in NA is 1.

I'm sure they sent a spoken code to my Canadian landline for 2FA. Actually I do have a UK SIM in my dual SIM phone but the landline was the number on file with them. So similar to British Columbian's experience above.

I saw on the NS&I website last week that overseas numbers would receive a call not text message.

Too avoid hefty phone call charges to the UK I suggest using mytello.com, calls to the UK with them are $0.01 a minute.

When i logged in to "ERNIE" on Saturday i was given the choice, text or phone call, i chose phone call. But its ironic because my phone call history said incoming call from France (33 country code. Strange!