Hi I am travelling to India in December of this year from the USA via London (Dallas - London - Hyderabad) for H1b stamping. My current stamped F1 visa is expiring in November. But I have valid I797 until 2021. So i have to take Direct Airside Transit Visa (DATV) to pass through London airport.
Could somebody please tell me how to apply for DATV visa from USA?
If somebody had already been in the same situation and applied for DATV, could you please share your experience here.