Doctors can choose to leave the United Kingdom and work abroad at any point during their training or career.
The UK Foundation Programme Office undertakes an annual survey of doctors in the UK before they complete their two years of foundation training. This is the only source of comprehensive data on this subject.
In 2017, just over 400 of respondents stated that they intended to practice overseas after completing their foundation training. That is around 6% of respondents, down from 11-12% in 2015 and 2016.