Is it even reasonable though for a TOC to ask for an inflated out of court settlement from a child aged 16? Surely it would only be reasonable for them to request the difference in fare. Is it even reasonable for them to expect a child to write back. Surely a warning letting explaining the importance of travelling on the correct ticket would be most effective.
This would assume I consider it reasonable to ask for an inflated out of court settlement from
anyone. I would much rather see a higher[1] statutory Penalty Fare, intended to be used for cases of evasion as well as error, with a statutory appeals process and the repeal of the Byelaws and RoRA parts allowing prosecution for anything other than the likes of deliberate falsification of tickets.
I am totally in favour of fare evaders paying for their actions by way of an inflated fee, but it has to have proper checks and balances and a proper appeals process controlled by someone other than the TOC.
With that in place, yes, it would apply to a 16 year old, and indeed to a younger child via their parents, though if they were travelling accompanied by an adult I would see that adult as liable.
My view would be that it should be £80, reduced to £40 for prompt payment, increased to £120 for late payment. An appeal should stop the clock as it does for parking. In all cases, the appropriate walk-up fare that would have been sold had it been purchased before boarding should be charged in addition. (This latter item would stop TOCs using Anytime tickets as effective penalties). It should apply to all trains nationally except where there is no opportunity to pay, i.e. a means of purchasing or collecting the desired ticket (not a partial one) using the desired method of payment as accepted by the railway.