Hi all

Quick question. I'm flying LHR to SIN in First. Flight departs 19.55.

What's the earliest I can get into the lounges? I had thought I could drop bags and enter any time from 5am flying First. But I have a friend (who's familiar with airport security) who insists that you're not allowed to go through security any earlier than T - 6 hours. I think the reasoning is that they don't want people hanging around too long airside.

Does anyone know if this is true? I often check in for F flights quite early (4 or so hours before), but this time I'm probably going to get to the airport about 1pm.

Thanks in advance,