North West,
I think you missed the point of my post.
The original statements were about Manchester's reluctance to welcome LCC's. I went on to state that the broad range of carriers means that MAN's exposure to airline cutbacks is much less severe than other airports that are reliant on a handful of carriers, ala the excel closure a few years ago.
In terms of market demographics, of course MAN is exposed being a predominantly outbound market, but, less so as a predominantly leisure airport, given the leisure aspect typically outranks the business aspect of Travellers demographics in the UK on average 60% leisure versus 40% business, even at Heathrow.
Therefore, if leisure travel suffers in the UK, every airport will suffer, not just MAN.