In message , at 11:12:18 on
Thu, 29 Sep 2011, Paul Scott remarked:
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.

But would a 'regular' (ie rail only) ticket from Finsbury Park to
Cambridge be valid on the WA route between Cambridge and Tottenham Hale
at all?

An "Any Permitted" one would, versus a "Not London". The former is about
£2 more expensive.

In fact, now I look closer, you don't need to do the BoJ trick, because
a FP-Shelford ticket is the same price as a FP-Cambridge one (ie the
final leg south is free). It also means that if you buy the Shelford
ticket it's possible to return via Cambridge as well as arrive that way.

So the rail-only ticket needed is a FP-Shelford Any Permitted, but it's
entirely possible others are cheaper, partly because of throwing away
the Tottenham Hale onwards entitlement.

And we still don't know if this is a day trip or not, or Off-peak or not
(either of which might affect the result). Although U23* tickets are
only available as Day tickets, so that might be a clue.

opFrom: U23* LONDN
opTo: Shelford Cambs
opRoute: NOT LONDON
op
opI've now been told this is wrong as it won't allow me to travel from
opFinsbury Park to Shelford via Cambridge.

I think the ticket is valid via Cambridge, because like the Finsbury
Park one it's the same price to either Cambridge or Shelford.

ps the Avantix code for U23* London is 0797.
pps I'm assuming that the U23* ticket allows use of the Underground to
Tottenham Hale, not sure where to look that one up though.
--
Roland Perry