"Roland Perry" wrote in message
...

Presumably the Victoria line follows York Way
and then turns under the NLL,

Not at all: the Vic runs not surprisingly close to Angel Station. Somebody
might remember the location of the ventilation shaft in the area... is it
Gibson Square?

--
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