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So I recently made a return journey from London Southend (SEN) to Dublin (DUB), flying out of SEN and into DUB on Saturday on Aer Lingus, and back to SEN on Sunday via a similar Aer Lingus flight. In Dublin I did have to go through passport control (I received a stamp because I am non-EU).

But on the return flight back to SEN there was no immigration control at all (like a domestic flight). Was this some mistake?

I also asked another friend who had flown back from DUB to London Standsted (STN) and although they did have immigration control, there was a separate "Entry from Dublin" line which bypassed most checks, again my friend is non-EU.

So was this just a mistake? Or does the UK accept entries from Dublin/Ireland and just trust everyone coming in?

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up vote 20 down vote accepted

This is due to the Common Travel Area Zone ( and is not a mistake.

The assumption is that anyone entering the Zone has already been checked by Immigration when entering the Zone. Eg, if you travelled from the US to Ireland you would pass through Irish Immigration. The UK then trusts that Ireland has completed the relevant checks.

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So interestingly, the 1997 legislation in Ireland allows immigration officers to reject travellers arriving from elsewhere in the CTA zone, which explains why I was checked entering Dublin despite. – EdmundYeung99 Jun 24 '14 at 13:21
Yes, @EdmundYeung99. The CTA is not as open as Schengen: checks may be made. Travelling by ferry, checks are more common in Holyhead than they are in Dublin. – TRiG Jun 24 '14 at 14:01

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