Unified Model (NCUM) at a global horizontal resolution of ~25 km and 70 levels in the vertical and the associated 4D-VAR data assimilation system was successfully implemented at NCMRWF for real-time weather prediction in March 2012. Regional versions of NCUM at 12 km and 4 km horizontal resolutions & 70 vertical levels have also been implemented and tested for select seasons/cases. At NCMRWF GFS at a resolution of T574L64 and GEFS at a resolution of T190L28 are also being run in real-time.