I have travelled and lived abroad including living in Damascus. Probably partly being the eldest in my family, and being a lecturer I have always been someone who takes care and checks on thing, before following any new plans. So before I commited to moving I made sure that I had enough money to pay a full price ticket to get home, and also paid I think it was called class c, where I paid national insurance to remain up to date , which I continued to pay for the whole time I was abroad - which of course meant that I was receiving no medical or dental attention or any other things whilst I was paying in this money.
There are many reasons people go to work abroad and I first went abroad not to get out of paying tax or anything else, but to save money to allow me to buy a house when I returned. I saved up every penny I could and did without many other things to allow me to do this. So I then returned to Britian , buying a property, paying all taxes and then worked in Britian again paying all the normal taxes and costs.
During my time abroad I met many other people and the majority were in a similar situation. Either trying to save for a house or some big thing, or using the job to move up in their career and gaining useful experience. Of course there was the odd person who appeared to be just avoiding not only paying taxes but seemed to be trying to avoid helping in a family situation.
So like any other situation there are a range of people and circumstances. Those of us who had worked abroad before had the knowledge and were able to make sensible precautions making sure we knew how to deal with possible situations that might arise. We made decisions to the best of our ability , as far as we knew it, but obviously things can change . No one can be sure of anything in life and in circumstances such as the present one, then british people should be able to count on help to return to Britian. That is part of the job that british embassies are there to do, and to be able to direct people to the best way forward. Their safety is the most important thing that needs dealing with now and once they are safely in Britian costs can be dealt with.