Professor Paddy Mallon:

It is something I have brought up repeatedly. One of the approaches we have not taken which other countries around Europe have taken is that we have not, until recently, adopted a very strict approach at our borders. We have a large landmass border with the UK in respect of which we have applied no restrictions. Even if we put restrictions in place at the airports, we will still have people travelling across that land border.

I recognise the limitations with that but when one looks at other countries around Europe with large land borders, they have been much more restrictive in terms of movement across those borders than we have.