I will be flamed, I bet.
Op, unless you have lived abroad you dont realize just how low living standards are in the uk, compared to Europe and certain places in the far east.
People are more used to poor housing stock, damp, cold homes, high utility bills, expensive insurance, it is just the way life is for most people. They dont complain, but take it in their stride, and have learnt not to expect better.
There will be plenty of people telling you that you will be able to live on this, with the expense levels in the uk. The question is, why would you actually want to?
What good is there to offset this? You need to work out if the positives in the move to the UK are outweighing the expense and the drop in living standards. You need to make your own list of pros and cons.
Yes, you can drop sky, and have cheaper haircuts less frequently, eat out less, drop holidays, and run cheap cars. What is actually the big carrot that makes "downgrading" to the uk preferable to where you are now?