Some more facts are certainly required here but I believe Viking run several arms; Viking Hellas, Viking Sweden and Viking AB (UK) amongst them.
It seems they have now dropped Viking AB or at least the best part of it. The point is these were UK employees on UK contracts. You can't just go to another country and run an operation based in that country but on your own rules. If you could there would be nothing stopping you having a company that was based in a third world country where there are no rules to speak of, and then operate it in the country of your choice and exploiting it, and it's people.
I work for a Canadian company based in the UK but they still have to employ us according to UK law.
Sorry if I'm wandering off the original point.