I really understand your frustration as I am in the same situation like you. I am checking every day to see if BA will cancel my flight to Seoul on 20 March. I tried to email them again when I saw that you ''can book with confidence'' now between 3-16 of March and I asked what can they do about me and other people like me? The answer was : '' We understand your frustration and we know it is a difficult situation, but none of our polices covers your circumstances''. So all I can do now is wait and hope that at some point before my flight, UK will decide to ban the flights to South Korea like Australia did today and many other countries before. It is really unbelievable that now when South Korea is the second hot spot after China with more than 6.000 cases, some Airlines like BA still think it is alright for us to travel there as long as they can get the money from us.