Er yn galonogol eu gweld, nid yw'r gwelliannau o ran perfformiad gweithredol ac ansawdd a diogelwch yn cael eu cyflawni mor gyflym na mor effeithiol â phosibl. Mae angen inni weld mwy o welliannau mewn perfformiad ac mae angen eu cynnal.
The improvements in operational performance and quality and safety, while welcome, are not being made as quickly and effectively as possible. We need to see greater improvements in performance and these need to be sustained.