Another question about this….I’ll be arriving at LHR from MIA on Virgin Atlantic T3 and connecting to BA at T5 for VCE

Do you know if I will need to stop somewhere to get a new Boarding Pass for BA or will I be able to use a Boarding Pass from my phone or one I print out at home? I usually don’t do 2 separate airlines and I don’t remember how it works.

Thanks again.