I did a RTW *A trip to DXB in early May 2001.
I did the trip via FRA on LH in F since the
LH flight was three cabin. I was on a paid
F ticket but I would suspect that SEA to LHR
to DXB would require two awards as with *A.
If all goes as plan I will do the LHR to DXB
to LHR on BA in a 777 in early July 2001.
Never did consider via Asia.