There was a Sterling invasion at LTN particularly on Sundays in the late 70's (as CJ has already mentioned a few pages back)
As far as interesting periods go, the lack of variety of types in the air these days will obviously make the days gone by seem far more interesting. I do recall how quiet the airport was at times in the late 70's through to the mid- 90's. However, this is what gave the airport more scope to accept a lot of diversions or a large amounts of visitors for events such as international football matches or other events as portrayed in pictures on this thread....
