Well, that certainly explains the spate of near misses in the North East over the last few years.
Guess they should have gone to Specsavers.
What's all this with the obsession with London? You really think terrorists are so dumb that they don't know there is a world full of targets out there? You honestly believe that they're also incapable of being creative and original in the ways in which they go about their activities?
Why bother with anything so complex as trying a mid-air collision. Ridiculously easy to get a job at a regional airport and put a device into the hold whilst loading bags. Think it can't be done? Only a matter of time. It's not the terrorists who are dumb.