Jet jobs I have been told are only open to those with 1000 hours of airline experience with at least 300 hours jet time.
As for modular students I think they are the prefered option out of 6 people I know who got in, only one was integrated although he did hold an icao cpl prior to taking UK integrated course.
Hours ranged from 300 fresh out of IR up to 1500 hour FI's
Hope that clears things up.