Catching train solo- age?

[sunlovingcriminal]

What age/school year would you let your kids get the train by themselves?

To put into context 10 min walk to station (if that), 10 min train journey, 10 min walk other end (but likely to be picked up at station).

Context- pair of kids same age. Both have mobiles.
Train journey would be regular. They are familiar with where they're going at both ends.

(And usual caveat, I know it depends massively on the children in question, but this is about when you'd be okay with your own kids making this journey as a twosome).

When they start high school. Loads have to. Mine had a short walk, bus into local town, a wait, then a second bus to the school from age 11 (almost 12). Some of the schools in Manchester take kids from as far as Stoke, commuting via train then bus.

Mine have done since the first day of year 7. It’s 15 mins each each to the station and 8 mins in the train for them