Originally Posted by
essxjay
That's simply, factually untrue that tourist could not leave since other means of transport are available. Affordability of alternate means of transport is a separate matter.
Agreed. I had a similar reply when someone asked about tourists departing the UK. There are options to leave the UK and to fly from countries not using WBI. And there are airports in the UK (perhaps even in England; definitely in Scotland and in Wales) which do not use WBI.