tim (moved to sweden) wrote:
AIUI "London" is the London terminals rather than the conurbation,
especially as your journey started within it.

That's what I'd think usually, but in this specific case I can't see any
reason to forbid London terminals,

The reason is to stop you double backing between Waterloo
and CJ. If you want to do this the fare is higher (by the cost
of a return W-CJ for each direction of travel)

I see. Isn't doubling back forbidden by the routeing guide anyway?

especially as Waterloo is the only
London terminal with services to Staines.

Why is this relevent? They stop at CJ and even if they didn't
you still wouldn't be able to change at Waterloo without paying
the higher fare.

Now that you explain it obviously it's not relevant, but my original
thoughts were that 'not london' might be to stop you transferring
through London to another operator, leaving from another terminal. (And
as asdf points out it does prevent this in the case of a Thameslink into
London.)

Alex.