Spoke to BA at length. They stick to the rules of the ticket, rulesheet 16.d.4
4) Upgrading by sector to Business/First class is not permitted.
Individual airlines are allowed to make exceptions. AA does, QF does. If the ticket complies with the usual MFU requirements you may have a chance, but these rules are quite strict...
Last edited by henkybaby; Nov 18, 2009 at 3:09 am