Look on the Flyertalk BA forum 2005-2020. Was a huge thing and not always for upgrades, because BA have been stingy with upgrades for a long long time. Lounge a

Look on the Flyertalk BA forum 2005-2020. Was a huge thing and not always for upgrades, because BA have been stingy with upgrades for a long long time. Lounge access/baggage/priority boarding etc was a huge part of it Popular mileage runs were London to Honolulu with lots of sectors on the way iirc !!