AusTxHiker... I know you can use Diners CLub
points to top off British Air miles, but I
don't think British is a member of AMEX
Membership Rewards (if that's what you meant
by M-R.) Virgin Atlantic is, but British is
not, neither is American or United.

The AT&T offer might be worth considering,
Benny if you have this phone program and your
8-thousand miles are expiring anytime soon.
CATMAN