Admiral :
But GET OUT of an airline cockpit.
That is the point, this was NOT an airline flight , but a Flight display/demo USING an airliner. Huge difference. If it had been the conclusion of a normal LHR-LIS flight, I would fully agree with you, pax did not pay tfor this. But it was not, and I doubt anyone would be interested to see an A310 doing a perfect ILS during an airshow.