Super Off-Peak return- Get off early?

A question about : Super Off-Peak return- Get off early?

Last week I purchased a 2-part return from London to Darlington and only used the outward part of my ticket (got a lift back). Next week I will again be getting a lift to Darlington but the day after I'll be going to Doncaster, which is on the same route.

As I'm not booked on a specific train and my ticket says Route: Any Permitted would I be able to use my return to get to Doncaster? (And even use it from Doncaster to London on the following days? I know that one is a long shot)

The train company is East Coast.

Best answers:

• My understanding is you are allowed to break and resume your journey unless there is a restriction on your ticket (and you would need to travel at super-off peak times).
  https://www.eastcoast.co.uk/rail-trav...-peak-tickets/
  Is there a restriction code on your ticket?
• Yes, you can break your return journey - including overnight - subject to superoffpeak train times being used