The crew would not need to know the Stansted ILS frequency. They could just enter EGSS and the runway in use as the alternate destination, accept radar vectors to the ILS, use the autopilot (with the rudder trimmed correctly on the A319) and fly the approach and landing. The database knows the ILS frequency and, if necessary, ATC knows it anyway.
Please let us know which airline you fly for, or hopefully none
We can then steer well clear. At the airline in question today, which I might even fly for, we tend, maybe rather unusually, to brief for an approach. Such a brief requires preparation, interaction and check of understanding. Not just select it in the box and watch the aircraft fly it
