My old expired passport has my US visa in it, which is still valid. I have a new passport that I intend to use when I travel to the UK.
Since I am applying for UK Visa from the US, I need to submit proof of my right of residency in the country where I am living. So in my case, it would be my US visa in my old expired passport.
If I mail them my old passport will they return it back to me along with my new passport? If they don't return my old passport, I will be in deep trouble.
Alternatively, can I just upload a scan of my US Visa to the VFS website instead?