Thanks mikefly. I haven't amended anything , but I used a small amount of Avios points to get a little discount, as they were just sitting in my BA account. Price is ok on the alternative, and I don't mind holding a BA voucher. You think 1 hour 40 mins at Madrid is enough on an Aeromexico connecting flight? It seems like it would be to me, as they are selling it as one ticket, but now I doubt everything