Originally Posted by
Andriyko
Whether or not BA contacted immigration authorities is of little relevance here as well.
Actually, I disagree with that. The OP has a case as to why the documentations he had should be considered valid and sufficient to allow entry, and I would certainly expect BA to use the facility they have to contact the relevant authorities to put the case to them rather than deny boarding because they 'think' it would not be enough. However, I agree with your subsequent post that I find the op's apparent certainty that they did not do so unconvincing. I find it more likely that they did but may not have asked the best question, and I don't think the op's strategy seemed best here as from the op, he seemed to dismiss their worry off hand rather than help them frame the case.