AIUI, there was severe pressure on the Training Staff to keep the numbers coming out of Phase 1 Training up. The Units needed manpower due to a high number of sign offs and the MOD had already invested a lot of cash getting the recruits that far. I knew a few of the DS at ATC Pirbright (sausage factory) and they were always talking about the difficulty of getting someone binned.
Which was the complete opposite of.
Training Cpl - Would you have this recruit in your Section ?
Training Sgt - Would you have this recruit in your Pl ?
Pl Comd - Would you have this recruit in your Pl ?
2 no's and you were binned.