u/Less-Virus6998

I have submitted my long term student visa appointment application with an address of a friend currently living in Spain under the address section. At the BLS appointment will they ask for anything else to confirm this address? Like do I need a letter from them or a bill to prove it? I’m very confused.

I have submitted my student visa appointment application with an address of a friend currently living in Spain under the address section. At the BLS appointment will they ask for anything else to confirm this address? Like do I need a letter from them or a bill to prove it? I’m very confused.