Re: A Cunning Plan
Strictly, the Common Travel Area (UK, Ireland, IOM and CI) applies only to British and Irish citizens.
Irish information: Citizens Information Ireland: Common Travel Area between Ireland and the United Kingdom
Common Travel Area rights can only be exercised by citizens of Ireland and the UK. If you are not a citizen of Ireland or the UK, you will not be able to exercise Common Travel Area rights.
British information: GOV.UK: Common Travel Area guidance
Under the CTA, British and Irish citizens can move freely and reside in either jurisdiction and enjoy associated rights and privileges, including the right to work, study and vote in certain elections, as well as to access social welfare benefits and health services.