Thank you MarisaWright. I fully appreciate what you are saying and know that things can change rapidly with health, especially at my age.
The agent is most definitely MARA registered and is working on my son & family's visa application and is very thorough. I do know my UK pension will be frozen and I am not in receipt of any other benefits. I do take blood pressure tablets but that is all, no other medication or illnesses (to date).
I moved from one end of UK to another 5 years ago as we wanted to be closer to our only son, sadly the following year my husband was taken ill so I spent the next few years looking after him until he died so friends are very few and far between. I have no family whatsoever apart from my son which is why it is important I go with them.
I would be amazed if they returned at any point, my daughter in law's family are already there and citizens, she has a job promised as she is a nurse and they have been across yearly since her parents moved out so they are well aware of prices, heat, lifestyle etc. Having said all that, I understand there is always the fear of having to return so I shall make provision should that occur but I sincerely hope it won't. My biggest worry is staying healthy so I don't get refused entry.