You're right, because you were informed the case was being referred to the CPS you've had what amounts to a verbal NIP.

The next thing you'll get will be from the court.

It's rare to get a 'producer' (HORT/1) since all of your documents can now be verified at the roadside when they do the PNC check, you'll only get a producer if you can't verify your ID.

They have 6 months to issue a summons, mine arrived on the last day of the 6 months.