Originally Posted by
Prospero
When making one-way reservations for travel in economy class, BA.com also offers the proactive option of upselling to R class (but not I class as far as I can make out)
I booked a one-way LHR-ARN which was pricing up stupidly for CE (especially for a risable afternoon tea service

) but after booking MMB offered me the fixed price upgrade into I class no problem.