Train Season Ticket - Another 'Any Permitted Route' query (shorter journey)

[Disombobulated]

Hi, Apologies that the 'Permitted Route' question has been on here many times but I can't see this specific query.
I need to travel to and from London Waterloo on a weekly basis and therfore want a season or flexi ticket.
My local station (Chandlers Ford) changes at Southampton Airport Parkway en-route to Waterloo.
I will mostly travel from the latter but will occasionally travel from my local station (C/F) too so I was going to buy a season ticket for the longer journey on the assumption that I could travel from either with this ticket. Strangley the longer journey (C/F) is cheaper which suggests I might have a problem when travelling from Parkway.
My logic was that it's en-route so qualifies as 'Any Permitted Route' but I guess their logic may be that the limited trains from my local station reduce the incidents where I can travel to Waterloo hence the reduced price.
Can anyone shed any light on this please?

 

[jfollows]

If you have a season ticket from Chandlers Ford to London then it is routed via Eastleigh, not Southampton Airport. So if you want to travel from Southampton Airport instead using this season ticket you will need to buy a single or return to Eastleigh, however the train you catch does not have to stop at Eastleigh en route.
Alternatively, if you have a season ticket from Southampton Airport to London then you'd have to buy a single or return from Chandlers Ford to Eastleigh when you want to use your local station but you could then change at Southampton Airport if you preferred.

 

[swt_passenger]

Chandlers Ford to Waterloo requires the change at Eastleigh. If you add a via point of Southampton Parkway the journey planner gives a warning that multiple tickets are required.

I see there’s a “routeing guide negative easement“ 700993 that prevents the double back.

 

[jfollows]

Chandlers Ford to Waterloo requires the change at Eastleigh. If you add a via point of Southampton Parkway the journey planner gives a warning that multiple tickets are required.

I see there’s a “routeing guide negative easement“ 700933 that prevents the double back.

700993 but good spot anyway! The double-back is fine using a Southampton Airport to Waterloo season ticket, though, as I mentioned earlier.

The routeing maps appear to allow travel via Southampton but this is prevented by the fares rule.

 

[Mcr Warrior]

Would a route "Any Permitted" season ticket from, say, Redbridge (Hants) to London Terminals, priced at £170.40 per week, potentially offer the OP their choice of starting points / routes into London?

 

[Haywain]

Would a route "Any Permitted" season ticket from, say, Redbridge (Hants) to London Terminals, priced at £170.40 per week, potentially offer the OP their choice of starting points / routes into London?

Or possibly Romsey, at £170.50?

 

[swt_passenger]

Or possibly Romsey, at £170.50?

Easement 700993 also seems to be ruling out doubling back between Eastleigh and Parkway from Romsey to destinations via Winchester. But presumably Romsey itself to and beyond Winchester must be ok via Redbridge and Central?

 

[jfollows]

Romsey has routeing points Southampton (Group), Salisbury and Eastleigh.
The Routeing Point Calculator (https://data.atoc.org/rp_calc) allows all three routes to London because they all pass the fares check.
The easement might apply to a single ticket but a season ticket that has validity along a route has no issue with "doubling back". In other words, if a season ticket is valid Romsey-Eastleigh-London direct and Romsey-Southampton-Eastleigh-London then it's also valid Romsey-Eastleigh-Southampton Airport-Eastleigh-London because it's a season ticket, even though a single/return ticket might not be valid.
For a season ticket you can draw all the valid routes, and then you can use each of them in part in both directions, and you can combine the parts. For a single/return ticket you can't do this, you can only use specific map combinations and you have to account for easements in both ways. I think.

 

[Disombobulated]

Thanks everyone for the explanation and the potential solutions, it's much appreciated.

So long story short if I get a season ticket from Romsey to London Waterloo I can travel to or from either Chandlers Ford or Southampton Airport Parkway?

 

[jfollows]

Thanks everyone for the explanation and the potential solutions, it's much appreciated.

So long story short if I get a season ticket from Romsey to London Waterloo I can travel to or from either Chandlers Ford or Southampton Airport Parkway?

From what we have divined, a season ticket from Romsey to London gives you unlimited travel on the "circle" route Basingstoke-Winchester-Southampton-Romsey-Salisbury-Basingstoke, plus Romsey-Chandlers Ford-Eastleigh, plus Basingstoke to London Waterloo plus Basingstoke to London Paddington via Reading.

So, yes, you're able to travel from Chandlers Ford and Southampton Airport with it.

 

[Disombobulated]

That’s great, many thanks