This lowly non-elite is flying back from CDG to YEG via LHR next June and has a 5 hour connection at LHR and an wanting ideas how to fill that time. I'm starting my trip in London so am not inclined to zip into the city for a few hours and being a non-elite can't access any of the airline lounges. Are there any public premium lounges I can pay to enter? I arrive into Terminal 2 at almost noon and depart at 5:30 PM so it will be daytime and now some crazy overnight connection so things should be open. I have dined at Gordon Ramsay's Plane Food restaurant and will be flying out of Terminal 5 but that would only fill 60-90 minutes leaving me with over 4 hours. Any other diversions at Terminal 5 I missed last time through? I'd appreciate any input as it's somewhere in between a long layover that I'd feel more comfortable going into the city and a short connection that goes by quickly. Thanks!