"The health service would not cope without their contribution, and with the future supply of nurses looking uncertain this situation will not change any time soon.
"Allowing the ambiguity about the future of health care staff from the EU to continue is completely unfair. “
The proportion of EU nationals recruited as nurses in 2015/16 may be even higher than one in five, as the data from NHS Digital includes 1,674 nurses whose nationality was recorded as "unknown".
NHS Digital also noted that data on nationality was based on self-reported information from individual employees. As this may reflect cultural heritage rather than country of birth, the figures do not necessarily equate to migrants from other countries.