Mr. Fintan Towey:

We have reinforced the message to carriers that the checks they are to undertake as part of the overall control chain are obligatory. They claim they are doing everything they can. There is an important differentiation to be made between this check and checking the boarding pass or passport. Those documents are standardised. That is not true of PCR test or antigen test results. Some of those tests are attested by the digital Covid certificate. That is clearly helpful. That is a standardised document. However, other forms of evidence are not standardised. That may be the source of some of the difficulty. It is the case that a very small number of travellers have been found to have produced false documentation while others have produced no documentation at all. I cannot say but I wonder whether it may be the case that some travellers had provided something false to an airline at the point of boarding but, when interrogated by a border control official in uniform, decided not to produce anything at all. I do not know but some of those factors may be at play.