GROUNDHOG has hinted at some cunning plan to replace the NQY-LGW service when Flybe come off the route next March, but NQY to .... where? I would agree with him and others that SEN is not the ideal LON arrival airport from NQY but not because it isn't a 'real' LON airport, that argument surely being a thing of the past. Using LGW would still look the most passenger-friendly option (LHR simply not being a realistic expectation) but I rather doubt that anyone will find that very cost effective either unless EZY take it on. I suspect they have more lucrative routes in mind for their Flybe slots than a double daily NQY service.
So we're back to GROUNDHOG's 'plans' or hoping that EZY decide to try SEN-NQY on a year round basis - again something I wouldn't think very likely as they probably see it as simply a summer tourist route. Failing either of the above I reckon NQY-LON will join the list of those regional routes killed off by APD and high LON airport charges.