There isn’t normally an off peak period for fares before the morning peak on national rail, although their is on Oyster Payg depending if the journey being made is within the zones...
I agree which is why I still class it as peak and the other times as high peak.
I do admit it gets complicated under my logic as different tickets have peak and off peak restrictions so whether a train is running in the peak would depend on whether your ticket is classed peak or off peak.
I see there are a lot more Sutton loop trains running during the peak.ive also noticed that the number of journey opportunities from East Croydon to Sutton in the morning peak goes from 4 to 8. Amazed at how they have been able to double this. There are even trains stopping at Norwood Junction that show up!
The tramlink route via Mitcham Junction, for which a single ticket is not valid, also shows up more frequently.
In the reverse though for the evening they are still suggesting going to West Croydon and getting the tram, which again isn't valid on a single ticket. I'm aware passengers would use Oyster in London but not so I'd you have a ticket from outside London to Sutton. It's a limitation of National Rail Enquires.
I'm still checking other journeys I've taken in the past to see how it hey change for the better or worse.