<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by ozstamps:
Biz and First pax pay much higher tax rate than coach on same carrier, same flight.</font>
ozzie - with respect, I think you will find that the above is VERY correct. 
It is correct that Bus / First pay more tax on a multiple class plane - I agree. BUT as Concorde is a single class plane, the lower level of tax applies. It wouldn't surprise me if the QF award peoiple have been getting this wrong as it is being booked as a First Class award.