We are flying out BA economy on the A380 to Hong Kong in October and it was supposed to be the A380 back from Singapore,( again in economy) We have already paid to select seats (£134) as we wanted the pairs of seats as there are only the two of us travelling. Now the plane returning from Singapore has been changed to a 744 so our paid seats were reallocated to 2 in a set of 3. We were not emailed about the change of aircraft or seats it was only when I went on MMB I seen a message re flight change and seat change. I have reselected the seats at the back of the changed plane (two seats together) and these seat changes have been confirmed by email. My question is should I not have been advised by email regarding the change of plane and seats in the beginning??? What would have happened if I had never gone on MMB until checking in online??? Do you think it would do any good ringing BA?? Also does anyone know if the 744 will ne one of the older planes???