I don't know, I don't have that granular data to hand. But I can tell you that a very large portion of UFNs go unpaid.

There are other issues at play such as false addresses given and so on, but 122 is enough of a sample size to say that in my experience probably around a third were never paid resulting in a prosecution being the next logical step - but the companies involved decided not to take this step.

I believe nobody wants to test this law on the railway (been working in the industry for 6 years, never seen a prosecution in these circumstances) and I don't see why the airlines would adopt a different stance.

Again, I await BA having the gall to bill someone for dropping a leg, and the DM et al getting their claws into it.