Let's just say that Stansted is near London and jet intending to terminate there might not have the fuel to find the Mull of Kintyre.
On a different tack, when did the AD guys adopt Maritime missions? The DT said their mission was detect, deter, destroy. OK, nice and snappy but there wasn't much need for detection.
Now intercept, identify an dif hostile! now that has a nice round ring to it. I wonder why they didn't think of that.