MM
Since 1964 onwards, Constellations to 787.
However, the pattern of landings and departures are moving for the benefit of the airport, airlines, & NATS at the behest of investors that are linked.
Information & knowledge on landings and departures is now readily available rather than in 1946. Also if Hillingdon Council withdrew there objection to 09L departures a lot of hassle would be removed from the Berkshire area as well.