Since my original posting I've also discovered another fare that BA don't publicide too much. It is called the Explorer RTW and is valid only on BA and Qantas. For 29,000 miles in C/J ex-UK the cost is GBP2550. As my itinerary is mainly around BA and QF destinations (BKK, SYD, CHC,AKL, LAX), It would be a good fit for my requirements. I would have to get a separate ticket for BKK-HKT-BKK, however, this would cost less than GBP100 in C. According to BA this is only available to Travel AGents and they cannot issue the tickets. Anyone know if it is available in aany other European countries?