I am an Indian international student currently studying in the UK on a Tier 4 Student visa. As part of my United States B-1 visa application for an investment bank training program, I am required to go to the US Embassy in Belfast (as the one in London is too busy at the moment).
I am planning to fly to Belfast from Birmingham. While I will have my passport, and thus student visa, with me while going to Belfast, I will obviously need to leave my passport at the US Embassy for processing. Thus I won't have my passport with me while travelling back to Birmingham.
Does domestic airline travel within the United Kingdom itself require me to have my passport? Alternatively, is there any other form of ID I can use which would be acceptable in this case?