If you do have issues with the NTE5C/Mk4 combo then run-it-direct also do a VTE 2015 vDSL/ADSL Faceplate which fits on a NTE5A (unlike the Mk4 plate it does not have a RF filter, a disadvantage if you have REIN problems.) I believe It does come with both machine and self taping mounting screws.
I believed the MK3 Openreach faceplate
did have an RF filter.