TWA in-house staff newletter, 20-8-79, bottom of page 2 has a piece about Heathrow. There's a good quote in it by Larry Langley, TWA’s UK general manager : "Britain is trying to a quart of air travel into a pint pot”
Note the date!
http://www.umkc.edu/whmckc/twa/TWASk...1979.08.20.pdf