I am constructing a trip for my friend and I which I want to book on Monday, but in order to upgrade to F I need everything codeshared on BA (booking via TA using GUF). I was thinking of doing Svg-Lhr-hkg-sin-Syd // Syd-per-hkg-kul-lhr-svg. Or something similar, best option would include PEK, but can live without that. Anyone can construct an itinerary similar with just BA codeshares?