There are two types of visa reference numbers:
- Application number: This number is issued to you when you apply for a visa. It begins with “GWD”. You can find it on your Application Receipt Letter and on the emails sent to you by UKVI during your application.
- Visa number: This number is usually issued to successful applicants. It is in the format “UKVI/12345678”. It is printed on your actual visa sticker and is different from your passport number.