We’ve managed to book 3 flights in club world outbound using two companion vouchers. The return legs aren’t out yet but might be hard to get due to the time of year and popularity. I’m assuming I can’t call BA in the U.K. until 8am, can anyone give me a phone number of where I can call to book the return leg?

Am I right in thinking it’s the USA that would be open at midnight and is it midnight U.K. or 1 hour difference? Many thanks.