My photo has appeared here before so apologies to those who remember it.
Taken in the days when Luton also had 2 finger stands. The event was a football charter. I can remember that returning passengers never went through the terminal and were taken straight to their aircraft on the coaches they arrived on.
Not sure if the building on the right is the spectators building or the domestic terminal that was built but never used. I seem to remember the spectators building was made out of wood but I think it went through a transition when the domestic terminal was built.
Edit. Just found another photo taken from the lighting tower showing Concord as is passes a very crowded spectators area. The wooden building was a nice shade of yellow! No south stands in those days just a mass of grass.
It was a cheap family day out visiting the spectator’s area at Luton. You could have a meal and visit the bar plus there was also a small shop selling aircraft magazines etc.