Of course, one of the reasons that LCY is such a nice airport to depart from is that the amount of time that you need to wait for your flight is probably less than the time that it takes just to walk to and walk back from a lounge at LHR.

Reading some of the threads here about BA lounges, it sometimes seems that the main downside of LCY is that it has no lounges, BA or otherwise, to complain about.