When buying an advance ticket, how do I know which parts of the journey are in fact flexible? (Brighton/Hove to Oxford via London)

[klv]

When buying an advance ticket from A to C I'm often given a ticket A-B-C which says something like I must use a specific service between A and B, but the service for B-C journey is not specified. Or the other way round. E.g. I've seen some Hove to Victoria tickets with a change at Gatwick that, when printed, only specify the Gatwick-to-Victoria service. It's understandable, as it probably targets a less busy service to arrive with to Victoria. It works as an incentive for me to use this one, although it doesn't come from Brighton or Hove, and requires a change at Gatwick.

1) Are such tickets semi-flexible de jure? Or am I supposed to remember exact services specified at the time of booking even though their times are not printed in the ticket?
2) How do I know which part is fixed and which part is flexiblee before buying? My specific route of interest is Brighton, Hove or Preston Park to Oxford via London, using tube. And back. I'm worried I get lost in the tube or don't have time to grab a coffee (if not a 3-course meal), so it'd be really nice to know in advance which part of the journey is movable.

 

[gray1404]

GTR allow you to take any of their services when using an advance ticket to connect to/from one of their services. So the leg from Brighton/Hove to Gatwick Airport/London Victoria is unrestricted regardless of what is printed on your ticket.

 

[Swedenorer]

In this case for advances BR Fares indicates that it will be only the GWR leg which is specified plus connections. If you look up origin and destonation on BR Fares and scroll down to the advances you will usually get a small print indication in this case

Journey must include travel on the following main TOC: GWR
Connecting travel (where permitted by routeing) is allowed on: any TOC

However for the destinations you mention as the advances start at £40 each way and the Off Peak return any permitted is £81 for departures after 9 am if this suited I wouldn't bother with the advances at all.

 

[JonathanH]

GTR allow you to take any of their services when using an advance ticket to connect to/from one of their services. So the leg from Brighton/Hove to Gatwick Airport/London Victoria is unrestricted regardless of what is printed on your ticket.

The continued presence of that easement is being discussed here - https://www.railforums.co.uk/threads/connecting-services-on-advance.297805/page-2#post-7840755

 

[Watershed]

In this case for advances BR Fares indicates that it will be only the GWR leg which is specified plus connections. If you look up origin and destonation on BR Fares and scroll down to the advances you will usually get a small print indication in this case

Journey must include travel on the following main TOC: GWR
Connecting travel (where permitted by routeing) is allowed on: any TOC

However for the destinations you mention as the advances start at £40 each way and the Off Peak return any permitted is £81 for departures after 9 am if this suited I wouldn't bother with the advances at all.

That's a restriction on which operators' services must be included in the journey (the 'main TOC') and which ones may be included (the 'connecting TOCs'). The reservability of a service is separate from that. In fact you can sometimes buy Advances where you only have a reservation for the connecting TOC!

 

[Swedenorer]

Agreed

 

[klv]

The reservability of a service is separate from that.

Do you think it is possible to figure it out before I buy the ticket?

== Doublepost prevention - post automatically merged: 30 Jun 2026 ==

However for the destinations you mention as the advances start at £40 each way and the Off Peak return any permitted is £81 for departures after 9 am if this suited I wouldn't bother with the advances at all.

I was going to start the journey before 9am, so two advances might still be beneficial to me. I found it possible to force the system into preferred services by playing with extra time to change, but it only works nicely with a single change point.

 

[Watershed]

Do you think it is possible to figure it out before I buy the ticket?

Yes, by checking on Real Time Trains, FastJP or similar to see whether reservations are offered on each service you're taking.

If reservations are possible on a given train, a reservation must be made when a retailer sells an Advance ticket - even if only 'counted places' are available (i.e. a nominal reservation which doesn't guarantee a seat at all).

 

[Old Yard Dog]

I remember once being forced to rely on a very tight 40-min connection between Liverpool St & Euston when travelling on an advance from Colchester to Chester. This wasn't helped by the Liverpool St to Euston Square tube line being closed for engineering works.

I would have much preferred an earlier train from Colchester but the system wouldn't let me book one. In the end I just made it but I could have done without the stress.