"Francis Davey" wrote in message
...
I wondered if anyone can help me. I've just had a very unhelpful
discussion with a ticket vendor at Finsbury Park station, but i don't
entirely trust his response.

I'd like to travel from Finsbury Park to Shelford (Cambridgeshire).
There are two obvious routes: (1) train to Cambridge and then train to
Shelford; (2) Tube to Tottenham Hale and then train to Shelford.

I'll probably go via Cambridge, but coming back it looks like both
routes may be quickest depending on when I arrive at the station
(which is a random variable).

Last time I did this I was sold a ticket:

From: U23* LONDN
To: Shelford Cambs
Route: NOT LONDON

I've now been told this is wrong as it won't allow me to travel from
Finsbury Park to Shelford via Cambridge.

Is that right? Is there any way I can do this (I don't mind having to
buy underground tickets as well if necessary)?

Your help would be greatly appreciated. If there is a website that
explains all this, I am happy to look there.

National Rail's online journey planner shows different fares for the two
routes, but more importantly explicitly states that you need buy multiple
(ie two) tickets for the journey via Cambridge - that strongly suggests that
the advice at FP is correct...

The U23* origin is an underground ticket, but AFAICS having bought it you
are constrained to the Victoria Line and a change at Tottenham Hale.

I think it is a route where once you've bought a ticket (or tickets) for one
route or the other you lose the other choice...

Paul