My U.S passport is over the 15 years expiry date. I DO have a SSN but cannot find it as it was over 20 years since I worked in the US and has been misplaced. I am due to travel to the US soon and am trying to fill in the DS-11 form for an appointment with the embassy. I would like to have all of the information required as I am aware delays or penalties are incurred if missing. Is there a way of accessing your SSN from the UK in time?