It is not
all Off Peak tickets that allow break of journey, and it would be wrong to give such across the board advice.
For Off Peak and Super Off Peak
National Rail Enquiries says:
You may start, break and resume, or end your journey at any intermediate station along the route of travel on Off-Peak tickets unless the ticket restriction for the journey you are making does not allow it. If you intend to start, break and resume, or end your journey at any intermediate station, please call 08457 48 49 50 to check if it is available on your specific journey.
For Off Peak
Day and Super Off Peak
Day National Rail Enquiries says:
Break of journey is allowed on Off-Peak Day and Super Off-Peak Day tickets unless restricted for the journey you are making. If you intend to break your journey, please call 08457 48 49 50 to check if it is available on your specific journey.
The
National Rail Conditions of Carriage state:
16. Starting, breaking or ending a journey at intermediate stations
You may start, or break and resume, a journey (in either direction in the case of a return ticket) at any intermediate station, as long as the ticket you hold is valid for the trains you want to use. You may also end your journey (in either direction in the case of a return ticket) before the destination shown on the ticket. However, these rights may not apply to some types of tickets for which a break of journey is prohibited, in which case the relevant Train Companies will make this clear in their notices and other publications.
My emphases in
bold.
Whilst it is the case that most journeys with Off Peak/Super Off Peak Singles/Return and Off Peak/Super Off Peak
Day Singles/Returns allow break of journey there are many exceptions. With some Returns it is disallowed on the outward journey only, whilst others disallow it both ways.
Break of journey is however allowed on all Anytime tickets in Great Britain. For journeys that involve ferry travel to the Republic of Ireland via Holyhead or Fishguard Harbour, break of journey is allowed on the rail leg and in both directions in the case of a return. For travel to Northern Ireland via Stranraer, break of journey is
not permitted out or return. For travel to the Isle of Man via Heysham or Liverpool break of journey is allowed both ways. A day trip to Calais via Dover also permits break of journey out and return. For journeys to The Netherlands via Harwich break of journey is
not permitted as these are Advance Purchase fares only.