In message , at 10:23:42 on
Thu, 29 Sep 2011, Paul Scott remarked:
"Roland Perry" wrote in message
...

If you know you are going in a loop, then you can buy a ticket from
FP to Cambridge; use the outbound half to Cambridge, then immediately
use the return half towards Liverpool St, but break your journey at
Shelford.

But if you are then sold a normal Finsbury Park to Cambridge ticket, it
won't be valid coming back the other way, because it wouldn't include
U23 validity?

There are several tickets which could be bought (eg a Z U12 originating
one rather than Finsbury Park as such), but it looks like the cheapest
would be to buy the regular one, and pay the extra from Tottenham Hale
down to Finsbury Park.

...also, if the journey really is Shelford TO Finsbury Park as in the
subject line, that would require use of the outward portion twice...

It seemed clear to me that the journey in the title was the return leg.

eg "I'd like to travel from Finsbury Park to Shelford (Cambridgeshire)."
--
Roland Perry