As part of its raft of improvements (e.g. increase in retail space), Edinburgh airport now has a priority land to waft Business ticket holders painlessly through security (which has also been extended so that there's less congestion than there used to be even if you're Easyjetting, unless you're unfortunate enough to time your departure to coincide with the departure of a load of shell suits bound for the Balearics).
In any event, that's much less of a rammy than the shambles at Kings Cross as trains only appear to be announced nanosecends before they depart, leading to ghastly stampeding up the platform - thankfully first class usually seems to be at the concourse end of the platform.
I used Luton airport last week and was pleased to spot and use the £3 a shot security fast-track route - less than the cost of a coffee at Waverley station and well worth it.