My nephew had an interview with a certain medium sized turboprop operator in the UK, several months after completing his ME/IR with said school. They were not impressed with his level of knowledge of the IFR system, so it would appear. Didn't even make the sim stage.
He had never completed an NDB hold, nor could he explain certain chart symbology. He has recently had remedial training at a UK school, even although his ME/IR is current.