“If you leave the United Kingdom to work full-time abroad under a contract of employment, you are treated as not resident and not ordinarily resident if you meet all the following conditions • your absence from the UK and your employment abroad both last for at least a whole tax year.”
“If you have left the United Kingdom permanently or for at least three years, you will be treated as not resident and not ordinarily resident from the day after the date of your departure providing • your absence from the UK has covered at least a whole tax year.”