hi , after speaking to some one at Kirkless music, i find 3 bars before F (solo cornet) is the A natural or flat , he couldnt answer this one, but again solo cornet part, 2nd bar at L, E in 2nd group of quavers is a FLAT and so other E's in that bar and 3rd bar of L the first F is natural and not flat ,upper and lower part sould be same F Natural.
hope this a help to others, i also heard timp parts toward end have wrong bars rest,
perhaps pubilshers should issue lists of errors when there is a major contest coming up.