Hi,
It is not a published fare, but a "net fare / consolidator fare" that should be easy to find in the UK Market. I just looked on
www.netflights.com
It HAS to be on SK Metal all the way.
I have started several trips to BKK from London, but I prefer LH - as I can then upgrade to First.
They "all" (SK, LH, OS, KL, LX etc) should be in this range ex. UK.