I don't know about Jakob's time, but Ethan Hussey ran his 14:29 at the Armagh International Road Race 5K in March, equalling the U17 UK record (at 15) of John Nuttell.
So this is a kid whose best event is probably the 5K and has ran a 1:52 800m as a 15 year old and already 1:50 (I think twice) as a 16 year old this season, as well as a 50 second 400m.