Originally Posted by
KARFA
There aren't many variations you can do for this fare, basically you can either go direct LHR-BKK, or connection through HKG (a 140 TP route), or SIN/KUL (both 160 TP routes). Be aware that MH flights on the KUL-BKK route book in to I class and earn no avios or TPs. There is a RJ flight between KUL and BKK though. Also there is a CX flight between SIN and BKK.
More details on this fare in the post linked to from the wiki.
The RJ flight is quite a lot more expensive due to increased YQ, and getting RJ flights to credit to BAEC can be an absolute nightmare.