"Tom Anderson" wrote in message
...

I understand that LUL has to provide a train
every 10 minutes (ie 6 tph) to qualify as metro

From where do you understand this? Certainly not from Rickmansworth,
Chigwell, New Cross, New Cross Gate, Mill Hill East or Olympia.

--
John Rowland - Spamtrapped
Transport Plans for the London Area, updated 2001
http://www.geocities.com/Athens/Acro...69/tpftla.html
A man's vehicle is a symbol of his manhood.
That's why my vehicle's the Piccadilly Line -
It's the size of a county and it comes every two and a half minutes