T5 to T3 Security
I will be traveling first class SFO-LHR with a connection in business class LHR-PRG. The SFO flight arrives at T5 and the PRG flight departs from T3. I understand I will have to go through security at T3 after taking the transfer bus when making this connection. Is there a Fast Track security line for premium passengers connecting from T5 ? Will I have to go through any other line (immigration, passport control, etc) when making this connection? If so, do they have Fast Track lines?