"Tom Anderson" wrote:

Also, there's a copy of a map from the 1944 Abercrombie London masterplan,
mostly detailing the layout of the green belt, but it shows the locations
of airports. I recognised Heathrow, Northolt (i think) and the one down
near Croydon, but there was also one shown to the east, within the M25,
north of the river (i think - i didn't make an exact note). Any idea what
that might be?

There were on/off proposals for a London airport at Fairlop. It could be
that.

Chris