To answer Johnny Chips question Newcastle is not making money, their financial problems have been very well documented recently. They did refinance a couple of months ago but from what I can gather that's just a short-term fix and if the banks decided to call in the loans, I think they'd have a serious problem.
Yes DTVA makes a loss, but Peel simply offset it against the profits of other subsidiaries, or something like that, I'm not financially minded, but there is no debt whatsoever, nothing is owed to anyone.
Both airports are very viable and have significant potential in very different ways but for some reason, possibly partly due to politics, said potential never seems to get explored.