On Nov 8, 7:52*pm, Bruce wrote:

On Mon, 07 Nov 2011 22:54:06 +0000, The Other Mike
wrote:

Heathrow and the UK economy is being crippled by two runways, and the
night curfew.

If Heathrow served only passengers who were starting or completing
their journey in the UK, there would be masses of spare capacity.

The last statistics I saw were several years ago, but Heathrow had the
highest percentage of transfer passengers of any major European
airport. *70% of passengers were international travellers transferring
from one flight to another; only 30% were starting or completing their
journey in the UK.

Transfer passengers accounted for 35.4% of LHR passenger numbers in
2010:
http://preview.tinyurl.com/33e9utk

I don't think it's ever been much higher than that.