Grob Queen,
Cottesmore was the controlling authority for the CMATZ, when it existed as such. As far as I know, nothing has changed because it hasn't been NOTAMed.
No, the MATZ is no longer being promulgated as activated by NOTAM, however that was the initial NOTAM when Cottesmore first stopped flying operations. See post #16 on this thread, which gives the latest one on the AIS website.
