Part of this stems from Operation Gull, which is in place on a non-systematic basis at English airports as well as Northern Irish air- and seaports.

It is a measure to identify people intending to use the Common travel Area (a British-Irish semi-open border concept) as a loophole to enter the republic of Ireland, as border controls at the land border are limited to spot checks on the motorway and trains between Belfast and Dublin.

Part of this stems from Operation Gull, which is in place on a non-systematic basis at English airports as well as Northern Irish air- and seaports.

It is a measure to identify people intending to use the Common Travel Area (a British-Irish semi-open border concept) as a loophole to enter the republic of Ireland, as border controls at the land border are limited to spot checks on the motorway and trains between Belfast and Dublin.

Part of this stems from Operation Gull, which is in place on a non-systematic basis at English airports as well as Northern Irish air- and seaports.

It is a measure to identify people intending to use the Common travel Area (a British-Irish semi-open border concept) as a loophole to enter the republic of Ireland, as border controls at the land border are limited to spot checks on the motorway and trains between Belfast and Dublin.

Part of this stems from Operation Gull, which is in place on a non-systematic basis at English airports as well as Northern Irish air- and seaports.

It is a measure to identify people intending to use the Common travel Area (a British-Irish semi-open border concept) as a loophole to enter the republic of Ireland, as border controls at the land border are limited to spot checks on the motorway and trains between Belfast and Dublin.