On the same € 65.000 gross, a worker takes home roughly £12,179 more per year in United Kingdom than in Austria. That gap reflects the tax structure alone — before rent, healthcare, or savings behaviour come into play.
Housing is the first multiplier. Austria has moderate rent pressure, while United Kingdom has high rent pressure. That keeps United Kingdom's nominal advantage closer to a real-world advantage.
Healthcare and pensions go in the opposite direction. Austria runs a universal healthcare model — Statutory health insurance covers nearly all care. United Kingdom uses a universal model — NHS provides universal care funded from general taxation, with private top-ups. The country with lower take-home often shifts costs that the other country leaves to your private budget.
Net-of-everything, a relocation decision should weigh comprehensive welfare state in Austria against strong public welfare in United Kingdom, plus differences in pension capture, social safety nets, and city-level cost of living.