Ok another way, UK average salary is 27K GBP (my keyboard doesn't have a pound sign) 42K pro-rata is 50% over the average. Average salary in Australia is around $80k. So you'd only be on the average salary (assuming you're working equivalent hours). Another comparison is your current income compared to local house prices/rents and the same for Melbourne. What does 420,000 GBP buy you in your town? What would $790,000 buy you in Melbourne where you will work? (in some areas not much).
Thanks Peach, I already know the salary scales.
Im a social worker and they have offered me the lowest pay scale for my grade which when considering cost of living I'm not sure equates to a similar standard of living that i have now. I'm hoping to negotiate higher on the scale but also trying to figure out the lowest i can realistically accept without being skint.