There is no separate class for juniors in the regional championship.
Once upon a time the top 5 juniors in the u13 and u16 age groups qualified for the Junior Championship at the end of year finals. Due to falling numbers pre-qualification is not now required, and any Junior can enter (subject to numbers). This year the EOS finals are at Tiverton on Sept 5th/6th and combine Juniors, f2 and Veterans.
Mike