Kicking ability doesn't tell you whether he's ready to run a fast time. Guys like this work on finishing ability only shortly before champs, as Nick Willis explained in 2016. He was probably in heavy training and won't come out of that for another week. In any case, look at the quality of the British field by the fact that in the recent past, we've seen Kerr (3:29.05ish), Wightman (3:29.47), and Grice (3:30) in 3:29-30 shape. British trials now require that kind of shape to qualify.